The number 27555
27555 is a composite number with 16 divisors. Its prime factorisation is 3 × 5 × 11 × 167. Divisors (16): 1, 3, 5, 11, 15, 33, 55, 165, 167, 501, 835, 1837, 2505, 5511, 9185, 27555.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
27555 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
27555 is composite. Its prime factorisation is
- 3
The divisors add up to 48384; without 27555 itself that is 20829, so 27555 is deficient (20829 is less than 27555). Euler's totient φ(27555) = 13280 numbers up to 27555 share no factor with it.
- 4
The digits of 27555 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 59 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27555 = 3 \times 5 \times 11 \times 167 \]
27555 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 48384 |
| Euler totient φ(n) | 13280 |
| Square | 759278025 |
| Cube | 20921905978875 |
| Square root | 165.996988 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 59 |
| Scientific notation | 2.7555 × |
27555 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand five hundred and fifty-five |
| Binary (base 2) | 110101110100011 |
| Octal (base 8) | 65643 |
| Hexadecimal (base 16) | 6BA3 |
| Base 3 | 1101210120 |
| As time | 27555 seconds = 7 h 39 min 15 s |
Is 27555 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 (27555 ÷ 3 = 9185) | 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 | Yes (27555 ÷ 5 = 5511) | 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 3) | 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 3) | 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 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (27555 ÷ 11 = 2505) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27555 a prime number?
No. 27555 = 3 × 5 × 11 × 167, so it is divisible by 3.
What are the factors of 27555?
1, 3, 5, 11, 15, 33, 55, 165, 167, 501, 835, 1837, 2505, 5511, 9185, 27555.
What is 27555 in binary?
110101110100011 (hexadecimal 6BA3, octal 65643).
What is the square root of 27555?
About 165.9970.
Is 27555 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 27555?
It is a composite number with 16 divisors.