The number 55470
55470 is a composite number with 24 divisors. Its prime factorisation is 2 × 3 × 5 × . Divisors (24): 1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290 … 55470.
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How to work it out
- 1
55470 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55470 is composite. Its prime factorisation is
- 3
The divisors add up to 136296; without 55470 itself that is 80826, so 55470 is abundant (80826 is more than 55470). Euler's totient φ(55470) = 14448 numbers up to 55470 share no factor with it.
- 4
The digits of 55470 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 153 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55470 = 2 \times 3 \times 5 \times 43^{2} \]55470 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 24 |
| Sum of divisors | 136296 |
| Euler totient φ(n) | 14448 |
| Square | 3076920900 |
| Cube | 170676802323000 |
| Square root | 235.520700 (= 43√30) |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.547 × |
55470 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand four hundred and seventy |
| Binary (base 2) | 1101100010101110 |
| Octal (base 8) | 154256 |
| Hexadecimal (base 16) | D8AE |
| Base 3 | 2211002110 |
| As time | 55470 seconds = 15 h 24 min 30 s |
Is 55470 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55470 ÷ 2 = 27735) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (55470 ÷ 3 = 18490) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (55470 ÷ 5 = 11094) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (55470 ÷ 6 = 9245) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (55470 ÷ 10 = 5547) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55470 a prime number?
No. 55470 = 2 × 3 × 5 × , so it is divisible by 2.
What are the factors of 55470?
1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 1849, 3698, 5547, 9245, 11094, 18490, 27735, 55470.
What is 55470 in binary?
1101100010101110 (hexadecimal D8AE, octal 154256).
What is the square root of 55470?
About 235.5207, exactly 43√30.
Is 55470 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 55470?
It is a composite number with 24 divisors.