The number 27101
27101 is a composite number with 4 divisors. Its prime factorisation is 41 × 661. Divisors (4): 1, 41, 661, 27101.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 27101: a semiprime: 41 × 661, the product of two primes.
- 2
27101 is composite. Its prime factorisation is
- 3
The divisors add up to 27804; without 27101 itself that is 703, so 27101 is deficient (703 is less than 27101). Euler's totient φ(27101) = 26400 numbers up to 27101 share no factor with it.
- 4
The digits of 27101 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 46 steps to reach 1.
LaTeX source of the formulas on this page
\[ 27101 = 41 \times 661 \]
27101 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 27804 |
| Euler totient φ(n) | 26400 |
| Square | 734464201 |
| Cube | 19904714311301 |
| Square root | 164.623814 |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 46 |
| Scientific notation | 2.7101 × |
27101 in other forms
| Form | Value |
|---|---|
| In words | twenty-seven thousand one hundred and one |
| Binary (base 2) | 110100111011101 |
| Octal (base 8) | 64735 |
| Hexadecimal (base 16) | 69DD |
| Base 3 | 1101011202 |
| As time | 27101 seconds = 7 h 31 min 41 s |
Is 27101 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 1) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 27101 a prime number?
No. 27101 = 41 × 661, so it is divisible by 41.
What are the factors of 27101?
1, 41, 661, 27101.
What is 27101 in binary?
110100111011101 (hexadecimal 69DD, octal 64735).
What is the square root of 27101?
About 164.6238.
Is 27101 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 27101?
27101 is a semiprime: 41 × 661, the product of two primes.