The number 55031
55031 is a composite number with 4 divisors. Its prime factorisation is 113 × 487. Divisors (4): 1, 113, 487, 55031.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55031: a semiprime: 113 × 487, the product of two primes.
- 2
55031 is composite. Its prime factorisation is
- 3
The divisors add up to 55632; without 55031 itself that is 601, so 55031 is deficient (601 is less than 55031). Euler's totient φ(55031) = 54432 numbers up to 55031 share no factor with it.
- 4
The digits of 55031 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 166 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55031 = 113 \times 487 \]
55031 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 55632 |
| Euler totient φ(n) | 54432 |
| Square | 3028410961 |
| Cube | 166656483594791 |
| Square root | 234.586871 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 166 |
| Scientific notation | 5.5031 × |
55031 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand and thirty-one |
| Binary (base 2) | 1101011011110111 |
| Octal (base 8) | 153367 |
| Hexadecimal (base 16) | D6F7 |
| Base 3 | 2210111012 |
| As time | 55031 seconds = 15 h 17 min 11 s |
Is 55031 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 | No (remainder 2) | 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 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55031 a prime number?
No. 55031 = 113 × 487, so it is divisible by 113.
What are the factors of 55031?
1, 113, 487, 55031.
What is 55031 in binary?
1101011011110111 (hexadecimal D6F7, octal 153367).
What is the square root of 55031?
About 234.5869.
Is 55031 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 55031?
55031 is a semiprime: 113 × 487, the product of two primes.