The number 13549
13549 is a composite number with 4 divisors. Its prime factorisation is 17 × 797. Divisors (4): 1, 17, 797, 13549.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 13549: a semiprime: 17 × 797, the product of two primes.
- 2
13549 is composite. Its prime factorisation is
- 3
The divisors add up to 14364; without 13549 itself that is 815, so 13549 is deficient (815 is less than 13549). Euler's totient φ(13549) = 12736 numbers up to 13549 share no factor with it.
- 4
The digits of 13549 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 45 steps to reach 1.
LaTeX source of the formulas on this page
\[ 13549 = 17 \times 797 \]
13549 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 14364 |
| Euler totient φ(n) | 12736 |
| Square | 183575401 |
| Cube | 2487263108149 |
| Square root | 116.400172 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 45 |
| Scientific notation | 1.3549 × |
13549 in other forms
| Form | Value |
|---|---|
| In words | thirteen thousand five hundred and forty-nine |
| Binary (base 2) | 11010011101101 |
| Octal (base 8) | 32355 |
| Hexadecimal (base 16) | 34ED |
| Base 3 | 200120211 |
| As time | 13549 seconds = 3 h 45 min 49 s |
Is 13549 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 4) | 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 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 8) | 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 13549 a prime number?
No. 13549 = 17 × 797, so it is divisible by 17.
What are the factors of 13549?
1, 17, 797, 13549.
What is 13549 in binary?
11010011101101 (hexadecimal 34ED, octal 32355).
What is the square root of 13549?
About 116.4002.
Is 13549 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 13549?
13549 is a semiprime: 17 × 797, the product of two primes.