The number 56801
56801 is a composite number with 4 divisors. Its prime factorisation is 79 × 719. Divisors (4): 1, 79, 719, 56801.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 56801: a semiprime: 79 × 719, the product of two primes.
- 2
56801 is composite. Its prime factorisation is
- 3
The divisors add up to 57600; without 56801 itself that is 799, so 56801 is deficient (799 is less than 56801). Euler's totient φ(56801) = 56004 numbers up to 56801 share no factor with it.
- 4
The digits of 56801 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 104 steps to reach 1.
LaTeX source of the formulas on this page
\[ 56801 = 79 \times 719 \]
56801 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57600 |
| Euler totient φ(n) | 56004 |
| Square | 3226353601 |
| Cube | 183260110890401 |
| Square root | 238.329604 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 104 |
| Scientific notation | 5.6801 × |
56801 in other forms
| Form | Value |
|---|---|
| In words | fifty-six thousand eight hundred and one |
| Binary (base 2) | 1101110111100001 |
| Octal (base 8) | 156741 |
| Hexadecimal (base 16) | DDE1 |
| Base 3 | 2212220202 |
| As time | 56801 seconds = 15 h 46 min 41 s |
Is 56801 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 3) | 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 2) | 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 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 56801 a prime number?
No. 56801 = 79 × 719, so it is divisible by 79.
What are the factors of 56801?
1, 79, 719, 56801.
What is 56801 in binary?
1101110111100001 (hexadecimal DDE1, octal 156741).
What is the square root of 56801?
About 238.3296.
Is 56801 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 56801?
56801 is a semiprime: 79 × 719, the product of two primes.