The number 55113
55113 is a composite number with 4 divisors. Its prime factorisation is 3 × 18371. Divisors (4): 1, 3, 18371, 55113.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55113: a semiprime: 3 × 18371, the product of two primes.
- 2
55113 is composite. Its prime factorisation is
- 3
The divisors add up to 73488; without 55113 itself that is 18375, so 55113 is deficient (18375 is less than 55113). Euler's totient φ(55113) = 36740 numbers up to 55113 share no factor with it.
- 4
The digits of 55113 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 184 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55113 = 3 \times 18371 \]
55113 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 73488 |
| Euler totient φ(n) | 36740 |
| Square | 3037442769 |
| Cube | 167402583327897 |
| Square root | 234.761581 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 184 |
| Scientific notation | 5.5113 × |
55113 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand one hundred and thirteen |
| Binary (base 2) | 1101011101001001 |
| Octal (base 8) | 153511 |
| Hexadecimal (base 16) | D749 |
| Base 3 | 2210121020 |
| As time | 55113 seconds = 15 h 18 min 33 s |
Is 55113 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 (55113 ÷ 3 = 18371) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | 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 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55113 a prime number?
No. 55113 = 3 × 18371, so it is divisible by 3.
What are the factors of 55113?
1, 3, 18371, 55113.
What is 55113 in binary?
1101011101001001 (hexadecimal D749, octal 153511).
What is the square root of 55113?
About 234.7616.
Is 55113 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 55113?
55113 is a semiprime: 3 × 18371, the product of two primes.