The number 55165
55165 is a composite number with 16 divisors. Its prime factorisation is 5 × 11 × 17 × 59. Divisors (16): 1, 5, 11, 17, 55, 59, 85, 187, 295, 649, 935, 1003, 3245, 5015, 11033, 55165.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55165 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55165 is composite. Its prime factorisation is
- 3
The divisors add up to 77760; without 55165 itself that is 22595, so 55165 is deficient (22595 is less than 55165). Euler's totient φ(55165) = 37120 numbers up to 55165 share no factor with it.
- 4
The digits of 55165 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 91 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55165 = 5 \times 11 \times 17 \times 59 \]
55165 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 77760 |
| Euler totient φ(n) | 37120 |
| Square | 3043177225 |
| Cube | 167876871617125 |
| Square root | 234.872306 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 91 |
| Scientific notation | 5.5165 × |
55165 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand one hundred and sixty-five |
| Binary (base 2) | 1101011101111101 |
| Octal (base 8) | 153575 |
| Hexadecimal (base 16) | D77D |
| Base 3 | 2210200011 |
| As time | 55165 seconds = 15 h 19 min 25 s |
Is 55165 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 1) | 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 | Yes (55165 ÷ 5 = 11033) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (55165 ÷ 11 = 5015) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55165 a prime number?
No. 55165 = 5 × 11 × 17 × 59, so it is divisible by 5.
What are the factors of 55165?
1, 5, 11, 17, 55, 59, 85, 187, 295, 649, 935, 1003, 3245, 5015, 11033, 55165.
What is 55165 in binary?
1101011101111101 (hexadecimal D77D, octal 153575).
What is the square root of 55165?
About 234.8723.
Is 55165 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 55165?
It is a composite number with 16 divisors.