The number 57401
57401 is a composite number with 4 divisors. Its prime factorisation is 61 × 941. Divisors (4): 1, 61, 941, 57401.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 57401: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 61 × 941, the product of two primes.
- 2
57401 is composite. Its prime factorisation is
- 3
The divisors add up to 58404; without 57401 itself that is 1003, so 57401 is deficient (1003 is less than 57401). Euler's totient φ(57401) = 56400 numbers up to 57401 share no factor with it.
- 4
The digits of 57401 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 109 steps to reach 1.
LaTeX source of the formulas on this page
\[ 57401 = 61 \times 941 \]
57401 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 58404 |
| Euler totient φ(n) | 56400 |
| Square | 3294874801 |
| Cube | 189129108452201 |
| Square root | 239.585058 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 109 |
| Scientific notation | 5.7401 × |
57401 in other forms
| Form | Value |
|---|---|
| In words | fifty-seven thousand four hundred and one |
| Binary (base 2) | 1110000000111001 |
| Octal (base 8) | 160071 |
| Hexadecimal (base 16) | E039 |
| Base 3 | 2220201222 |
| As time | 57401 seconds = 15 h 56 min 41 s |
Is 57401 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 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | 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 3) | 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 57401 a prime number?
No. 57401 = 61 × 941, so it is divisible by 61.
What are the factors of 57401?
1, 61, 941, 57401.
What is 57401 in binary?
1110000000111001 (hexadecimal E039, octal 160071).
What is the square root of 57401?
About 239.5851.
Is 57401 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 57401?
57401 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 61 × 941, the product of two primes.