The number 55369
55369 is a composite number with 4 divisors. Its prime factorisation is 17 × 3257. Divisors (4): 1, 17, 3257, 55369.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55369: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 17 × 3257, the product of two primes.
- 2
55369 is composite. Its prime factorisation is
- 3
The divisors add up to 58644; without 55369 itself that is 3275, so 55369 is deficient (3275 is less than 55369). Euler's totient φ(55369) = 52096 numbers up to 55369 share no factor with it.
- 4
The digits of 55369 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 91 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55369 = 17 \times 3257 \]
55369 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 58644 |
| Euler totient φ(n) | 52096 |
| Square | 3065726161 |
| Cube | 169746191808409 |
| Square root | 235.306184 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 91 |
| Scientific notation | 5.5369 × |
55369 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand three hundred and sixty-nine |
| Binary (base 2) | 1101100001001001 |
| Octal (base 8) | 154111 |
| Hexadecimal (base 16) | D849 |
| Base 3 | 2210221201 |
| As time | 55369 seconds = 15 h 22 min 49 s |
Is 55369 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 1) | 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 6) | 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 55369 a prime number?
No. 55369 = 17 × 3257, so it is divisible by 17.
What are the factors of 55369?
1, 17, 3257, 55369.
What is 55369 in binary?
1101100001001001 (hexadecimal D849, octal 154111).
What is the square root of 55369?
About 235.3062.
Is 55369 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 55369?
55369 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 17 × 3257, the product of two primes.