The number 55407
55407 is a composite number with 16 divisors. Its prime factorisation is 3 × 11 × 23 × 73. Divisors (16): 1, 3, 11, 23, 33, 69, 73, 219, 253, 759, 803, 1679, 2409, 5037, 18469, 55407.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55407 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55407 is composite. Its prime factorisation is
- 3
The divisors add up to 85248; without 55407 itself that is 29841, so 55407 is deficient (29841 is less than 55407). Euler's totient φ(55407) = 31680 numbers up to 55407 share no factor with it.
- 4
The digits of 55407 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 78 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55407 = 3 \times 11 \times 23 \times 73 \]
55407 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 85248 |
| Euler totient φ(n) | 31680 |
| Square | 3069935649 |
| Cube | 170095924504143 |
| Square root | 235.386916 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 78 |
| Scientific notation | 5.5407 × |
55407 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand four hundred and seven |
| Binary (base 2) | 1101100001101111 |
| Octal (base 8) | 154157 |
| Hexadecimal (base 16) | D86F |
| Base 3 | 2211000010 |
| As time | 55407 seconds = 15 h 23 min 27 s |
Is 55407 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (55407 ÷ 3 = 18469) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 7) | 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 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (55407 ÷ 11 = 5037) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55407 a prime number?
No. 55407 = 3 × 11 × 23 × 73, so it is divisible by 3.
What are the factors of 55407?
1, 3, 11, 23, 33, 69, 73, 219, 253, 759, 803, 1679, 2409, 5037, 18469, 55407.
What is 55407 in binary?
1101100001101111 (hexadecimal D86F, octal 154157).
What is the square root of 55407?
About 235.3869.
Is 55407 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 55407?
It is a composite number with 16 divisors.