The number 55357
55357 is a composite number with 4 divisors. Its prime factorisation is 197 × 281. Divisors (4): 1, 197, 281, 55357.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55357: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 197 × 281, the product of two primes.
- 2
55357 is composite. Its prime factorisation is
- 3
The divisors add up to 55836; without 55357 itself that is 479, so 55357 is deficient (479 is less than 55357). Euler's totient φ(55357) = 54880 numbers up to 55357 share no factor with it.
- 4
The digits of 55357 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 228 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55357 = 197 \times 281 \]
55357 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 55836 |
| Euler totient φ(n) | 54880 |
| Square | 3064397449 |
| Cube | 169635849584293 |
| Square root | 235.280683 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 228 |
| Scientific notation | 5.5357 × |
55357 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand three hundred and fifty-seven |
| Binary (base 2) | 1101100000111101 |
| Octal (base 8) | 154075 |
| Hexadecimal (base 16) | D83D |
| Base 3 | 2210221021 |
| As time | 55357 seconds = 15 h 22 min 37 s |
Is 55357 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 2) | 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 1) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | 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 55357 a prime number?
No. 55357 = 197 × 281, so it is divisible by 197.
What are the factors of 55357?
1, 197, 281, 55357.
What is 55357 in binary?
1101100000111101 (hexadecimal D83D, octal 154075).
What is the square root of 55357?
About 235.2807.
Is 55357 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 55357?
55357 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 197 × 281, the product of two primes.