The number 57989
57989 is a composite number with 4 divisors. Its prime factorisation is 103 × 563. Divisors (4): 1, 103, 563, 57989.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 57989: a semiprime: 103 × 563, the product of two primes.
- 2
57989 is composite. Its prime factorisation is
- 3
The divisors add up to 58656; without 57989 itself that is 667, so 57989 is deficient (667 is less than 57989). Euler's totient φ(57989) = 57324 numbers up to 57989 share no factor with it.
- 4
The digits of 57989 add up to 38, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 135 steps to reach 1.
LaTeX source of the formulas on this page
\[ 57989 = 103 \times 563 \]
57989 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 58656 |
| Euler totient φ(n) | 57324 |
| Square | 3362724121 |
| Cube | 195001009052669 |
| Square root | 240.809053 |
| Digit sum / digital root | 38 / 2 |
| Collatz steps to 1 | 135 |
| Scientific notation | 5.7989 × |
57989 in other forms
| Form | Value |
|---|---|
| In words | fifty-seven thousand nine hundred and eighty-nine |
| Binary (base 2) | 1110001010000101 |
| Octal (base 8) | 161205 |
| Hexadecimal (base 16) | E285 |
| Base 3 | 2221112202 |
| As time | 57989 seconds = 16 h 6 min 29 s |
Is 57989 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 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 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 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 57989 a prime number?
No. 57989 = 103 × 563, so it is divisible by 103.
What are the factors of 57989?
1, 103, 563, 57989.
What is 57989 in binary?
1110001010000101 (hexadecimal E285, octal 161205).
What is the square root of 57989?
About 240.8091.
Is 57989 divisible by 3?
No. Its digits add up to 38, which is not a multiple of 3.
What is special about the number 57989?
57989 is a semiprime: 103 × 563, the product of two primes.