The number 55613
55613 is a composite number with 4 divisors. Its prime factorisation is 19 × 2927. Divisors (4): 1, 19, 2927, 55613.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55613: a semiprime: 19 × 2927, the product of two primes.
- 2
55613 is composite. Its prime factorisation is
- 3
The divisors add up to 58560; without 55613 itself that is 2947, so 55613 is deficient (2947 is less than 55613). Euler's totient φ(55613) = 52668 numbers up to 55613 share no factor with it.
- 4
The digits of 55613 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 114 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55613 = 19 \times 2927 \]
55613 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 58560 |
| Euler totient φ(n) | 52668 |
| Square | 3092805769 |
| Cube | 172000207231397 |
| Square root | 235.824087 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 114 |
| Scientific notation | 5.5613 × |
55613 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand six hundred and thirteen |
| Binary (base 2) | 1101100100111101 |
| Octal (base 8) | 154475 |
| Hexadecimal (base 16) | D93D |
| Base 3 | 2211021202 |
| As time | 55613 seconds = 15 h 26 min 53 s |
Is 55613 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 3) | 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 5) | 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 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55613 a prime number?
No. 55613 = 19 × 2927, so it is divisible by 19.
What are the factors of 55613?
1, 19, 2927, 55613.
What is 55613 in binary?
1101100100111101 (hexadecimal D93D, octal 154475).
What is the square root of 55613?
About 235.8241.
Is 55613 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 55613?
55613 is a semiprime: 19 × 2927, the product of two primes.