The number 55679
55679 is a composite number with 4 divisors. Its prime factorisation is 13 × 4283. Divisors (4): 1, 13, 4283, 55679.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55679: a semiprime: 13 × 4283, the product of two primes.
- 2
55679 is composite. Its prime factorisation is
- 3
The divisors add up to 59976; without 55679 itself that is 4297, so 55679 is deficient (4297 is less than 55679). Euler's totient φ(55679) = 51384 numbers up to 55679 share no factor with it.
- 4
The digits of 55679 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 140 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55679 = 13 \times 4283 \]
55679 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 59976 |
| Euler totient φ(n) | 51384 |
| Square | 3100151041 |
| Cube | 172613309811839 |
| Square root | 235.963980 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 140 |
| Scientific notation | 5.5679 × |
55679 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand six hundred and seventy-nine |
| Binary (base 2) | 1101100101111111 |
| Octal (base 8) | 154577 |
| Hexadecimal (base 16) | D97F |
| Base 3 | 2211101012 |
| As time | 55679 seconds = 15 h 27 min 59 s |
Is 55679 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 1) | 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 5) | 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 8) | 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 55679 a prime number?
No. 55679 = 13 × 4283, so it is divisible by 13.
What are the factors of 55679?
1, 13, 4283, 55679.
What is 55679 in binary?
1101100101111111 (hexadecimal D97F, octal 154577).
What is the square root of 55679?
About 235.9640.
Is 55679 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 55679?
55679 is a semiprime: 13 × 4283, the product of two primes.