The number 55739
55739 is a composite number with 4 divisors. Its prime factorisation is 139 × 401. Divisors (4): 1, 139, 401, 55739.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55739: a semiprime: 139 × 401, the product of two primes.
- 2
55739 is composite. Its prime factorisation is
- 3
The divisors add up to 56280; without 55739 itself that is 541, so 55739 is deficient (541 is less than 55739). Euler's totient φ(55739) = 55200 numbers up to 55739 share no factor with it.
- 4
The digits of 55739 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 65 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55739 = 139 \times 401 \]
55739 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 56280 |
| Euler totient φ(n) | 55200 |
| Square | 3106836121 |
| Cube | 173171938548419 |
| Square root | 236.091084 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 65 |
| Scientific notation | 5.5739 × |
55739 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand seven hundred and thirty-nine |
| Binary (base 2) | 1101100110111011 |
| Octal (base 8) | 154673 |
| Hexadecimal (base 16) | D9BB |
| Base 3 | 2211110102 |
| As time | 55739 seconds = 15 h 28 min 59 s |
Is 55739 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | 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 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 3) | 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 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55739 a prime number?
No. 55739 = 139 × 401, so it is divisible by 139.
What are the factors of 55739?
1, 139, 401, 55739.
What is 55739 in binary?
1101100110111011 (hexadecimal D9BB, octal 154673).
What is the square root of 55739?
About 236.0911.
Is 55739 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 55739?
55739 is a semiprime: 139 × 401, the product of two primes.