The number 55542
55542 is a composite number with 8 divisors. Its prime factorisation is 2 × 3 × 9257. Divisors (8): 1, 2, 3, 6, 9257, 18514, 27771, 55542.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55542 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55542 is composite. Its prime factorisation is
- 3
The divisors add up to 111096; without 55542 itself that is 55554, so 55542 is abundant (55554 is more than 55542). Euler's totient φ(55542) = 18512 numbers up to 55542 share no factor with it.
- 4
The digits of 55542 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
\[ 55542 = 2 \times 3 \times 9257 \]
55542 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 111096 |
| Euler totient φ(n) | 18512 |
| Square | 3084913764 |
| Cube | 171342280280088 |
| Square root | 235.673503 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.5542 × |
55542 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand five hundred and forty-two |
| Binary (base 2) | 1101100011110110 |
| Octal (base 8) | 154366 |
| Hexadecimal (base 16) | D8F6 |
| Base 3 | 2211012010 |
| As time | 55542 seconds = 15 h 25 min 42 s |
Is 55542 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55542 ÷ 2 = 27771) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (55542 ÷ 3 = 18514) | 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 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (55542 ÷ 6 = 9257) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 55542 a prime number?
No. 55542 = 2 × 3 × 9257, so it is divisible by 2.
What are the factors of 55542?
1, 2, 3, 6, 9257, 18514, 27771, 55542.
What is 55542 in binary?
1101100011110110 (hexadecimal D8F6, octal 154366).
What is the square root of 55542?
About 235.6735.
Is 55542 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 55542?
It is a composite number with 8 divisors.