The number 5809
5809 is a composite number with 4 divisors. Its prime factorisation is 37 × 157. Divisors (4): 1, 37, 157, 5809.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 5809: a semiprime: 37 × 157, the product of two primes.
- 2
5809 is composite. Its prime factorisation is
- 3
The divisors add up to 6004; without 5809 itself that is 195, so 5809 is deficient (195 is less than 5809). Euler's totient φ(5809) = 5616 numbers up to 5809 share no factor with it.
- 4
The digits of 5809 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 49 steps to reach 1.
LaTeX source of the formulas on this page
\[ 5809 = 37 \times 157 \]
5809 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 6004 |
| Euler totient φ(n) | 5616 |
| Square | 33744481 |
| Cube | 196021690129 |
| Square root | 76.216796 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 49 |
| Scientific notation | 5.809 × |
5809 in other forms
| Form | Value |
|---|---|
| In words | five thousand eight hundred and nine |
| Binary (base 2) | 1011010110001 |
| Octal (base 8) | 13261 |
| Hexadecimal (base 16) | 16B1 |
| Base 3 | 21222011 |
| As time | 5809 seconds = 1 h 36 min 49 s |
Is 5809 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 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 4) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 5809 a prime number?
No. 5809 = 37 × 157, so it is divisible by 37.
What are the factors of 5809?
1, 37, 157, 5809.
What is 5809 in binary?
1011010110001 (hexadecimal 16B1, octal 13261).
What is the square root of 5809?
About 76.2168.
Is 5809 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 5809?
5809 is a semiprime: 37 × 157, the product of two primes.