The number 55289
55289 is a composite number with 4 divisors. Its prime factorisation is 13 × 4253. Divisors (4): 1, 13, 4253, 55289.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55289: a semiprime: 13 × 4253, the product of two primes.
- 2
55289 is composite. Its prime factorisation is
- 3
The divisors add up to 59556; without 55289 itself that is 4267, so 55289 is deficient (4267 is less than 55289). Euler's totient φ(55289) = 51024 numbers up to 55289 share no factor with it.
- 4
The digits of 55289 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 153 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55289 = 13 \times 4253 \]
55289 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 59556 |
| Euler totient φ(n) | 51024 |
| Square | 3056873521 |
| Cube | 169011480102569 |
| Square root | 235.136131 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.5289 × |
55289 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand two hundred and eighty-nine |
| Binary (base 2) | 1101011111111001 |
| Octal (base 8) | 153771 |
| Hexadecimal (base 16) | D7F9 |
| Base 3 | 2210211202 |
| As time | 55289 seconds = 15 h 21 min 29 s |
Is 55289 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 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 9) | 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 55289 a prime number?
No. 55289 = 13 × 4253, so it is divisible by 13.
What are the factors of 55289?
1, 13, 4253, 55289.
What is 55289 in binary?
1101011111111001 (hexadecimal D7F9, octal 153771).
What is the square root of 55289?
About 235.1361.
Is 55289 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 55289?
55289 is a semiprime: 13 × 4253, the product of two primes.