The number 53555
53555 is a composite number with 4 divisors. Its prime factorisation is 5 × 10711. Divisors (4): 1, 5, 10711, 53555.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 53555: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 5 × 10711, the product of two primes.
- 2
53555 is composite. Its prime factorisation is
- 3
The divisors add up to 64272; without 53555 itself that is 10717, so 53555 is deficient (10717 is less than 53555). Euler's totient φ(53555) = 42840 numbers up to 53555 share no factor with it.
- 4
The digits of 53555 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 70 steps to reach 1.
LaTeX source of the formulas on this page
\[ 53555 = 5 \times 10711 \]
53555 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 64272 |
| Euler totient φ(n) | 42840 |
| Square | 2868138025 |
| Cube | 153603131928875 |
| Square root | 231.419532 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 70 |
| Scientific notation | 5.3555 × |
53555 in other forms
| Form | Value |
|---|---|
| In words | fifty-three thousand five hundred and fifty-five |
| Binary (base 2) | 1101000100110011 |
| Octal (base 8) | 150463 |
| Hexadecimal (base 16) | D133 |
| Base 3 | 2201110112 |
| As time | 53555 seconds = 14 h 52 min 35 s |
Is 53555 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (53555 ÷ 5 = 10711) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 53555 a prime number?
No. 53555 = 5 × 10711, so it is divisible by 5.
What are the factors of 53555?
1, 5, 10711, 53555.
What is 53555 in binary?
1101000100110011 (hexadecimal D133, octal 150463).
What is the square root of 53555?
About 231.4195.
Is 53555 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 53555?
53555 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 5 × 10711, the product of two primes.