The number 27255
27255 is a composite number with 16 divisors. Its prime factorisation is 3 × 5 × 23 × 79. Divisors (16): 1, 3, 5, 15, 23, 69, 79, 115, 237, 345, 395, 1185, 1817, 5451, 9085, 27255.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
27255 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
27255 is composite. Its prime factorisation is
- 3
The divisors add up to 46080; without 27255 itself that is 18825, so 27255 is deficient (18825 is less than 27255). Euler's totient φ(27255) = 13728 numbers up to 27255 share no factor with it.
- 4
The digits of 27255 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 64 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27255 = 3 \times 5 \times 23 \times 79 \]
27255 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 46080 |
| Euler totient φ(n) | 13728 |
| Square | 742835025 |
| Cube | 20245968606375 |
| Square root | 165.090884 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 64 |
| Scientific notation | 2.7255 × |
27255 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand two hundred and fifty-five |
| Binary (base 2) | 110101001110111 |
| Octal (base 8) | 65167 |
| Hexadecimal (base 16) | 6A77 |
| Base 3 | 1101101110 |
| As time | 27255 seconds = 7 h 34 min 15 s |
Is 27255 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 (27255 ÷ 3 = 9085) | 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 (27255 ÷ 5 = 5451) | 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 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 3) | 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 | No (remainder 8) | 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 27255 a prime number?
No. 27255 = 3 × 5 × 23 × 79, so it is divisible by 3.
What are the factors of 27255?
1, 3, 5, 15, 23, 69, 79, 115, 237, 345, 395, 1185, 1817, 5451, 9085, 27255.
What is 27255 in binary?
110101001110111 (hexadecimal 6A77, octal 65167).
What is the square root of 27255?
About 165.0909.
Is 27255 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 27255?
It is a composite number with 16 divisors.