The number 56439
56439 is a composite number with 6 divisors. Its prime factorisation is × 6271. Divisors (6): 1, 3, 9, 6271, 18813, 56439.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 56439: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
56439 is composite. Its prime factorisation is
- 3
The divisors add up to 81536; without 56439 itself that is 25097, so 56439 is deficient (25097 is less than 56439). Euler's totient φ(56439) = 37620 numbers up to 56439 share no factor with it.
- 4
The digits of 56439 add up to 27, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 109 steps to reach 1.
LaTeX source of the formulas on this page
\[ 56439 = 3^{2} \times 6271 \]56439 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 81536 |
| Euler totient φ(n) | 37620 |
| Square | 3185360721 |
| Cube | 179778573732519 |
| Square root | 237.568937 (= 3√6271) |
| Digit sum / digital root | 27 / 9 |
| Collatz steps to 1 | 109 |
| Scientific notation | 5.6439 × |
56439 in other forms
| Form | Value |
|---|---|
| In words | fifty-six thousand four hundred and thirty-nine |
| Binary (base 2) | 1101110001110111 |
| Octal (base 8) | 156167 |
| Hexadecimal (base 16) | DC77 |
| Base 3 | 2212102100 |
| As time | 56439 seconds = 15 h 40 min 39 s |
Is 56439 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 (56439 ÷ 3 = 18813) | 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 3) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (56439 ÷ 9 = 6271) | 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 9) | 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 56439 a prime number?
No. 56439 = × 6271, so it is divisible by 3.
What are the factors of 56439?
1, 3, 9, 6271, 18813, 56439.
What is 56439 in binary?
1101110001110111 (hexadecimal DC77, octal 156167).
What is the square root of 56439?
About 237.5689, exactly 3√6271.
Is 56439 divisible by 3?
Yes. Its digits add up to 27, a multiple of 3.
What is special about the number 56439?
56439 is a happy number: repeatedly adding the squares of its digits reaches 1.