The number 55918
55918 is a composite number with 8 divisors. Its prime factorisation is 2 × 73 × 383. Divisors (8): 1, 2, 73, 146, 383, 766, 27959, 55918.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55918 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55918 is composite. Its prime factorisation is
- 3
The divisors add up to 85248; without 55918 itself that is 29330, so 55918 is deficient (29330 is less than 55918). Euler's totient φ(55918) = 27504 numbers up to 55918 share no factor with it.
- 4
The digits of 55918 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 91 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55918 = 2 \times 73 \times 383 \]
55918 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 85248 |
| Euler totient φ(n) | 27504 |
| Square | 3126822724 |
| Cube | 174845673080632 |
| Square root | 236.469871 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 91 |
| Scientific notation | 5.5918 × |
55918 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand nine hundred and eighteen |
| Binary (base 2) | 1101101001101110 |
| Octal (base 8) | 155156 |
| Hexadecimal (base 16) | DA6E |
| Base 3 | 2211201001 |
| As time | 55918 seconds = 15 h 31 min 58 s |
Is 55918 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55918 ÷ 2 = 27959) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | 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 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | 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 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55918 a prime number?
No. 55918 = 2 × 73 × 383, so it is divisible by 2.
What are the factors of 55918?
1, 2, 73, 146, 383, 766, 27959, 55918.
What is 55918 in binary?
1101101001101110 (hexadecimal DA6E, octal 155156).
What is the square root of 55918?
About 236.4699.
Is 55918 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 55918?
It is a composite number with 8 divisors.