The number 55162
55162 is a composite number with 4 divisors. Its prime factorisation is 2 × 27581. Divisors (4): 1, 2, 27581, 55162.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55162: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 27581, the product of two primes.
- 2
55162 is composite. Its prime factorisation is
- 3
The divisors add up to 82746; without 55162 itself that is 27584, so 55162 is deficient (27584 is less than 55162). Euler's totient φ(55162) = 27580 numbers up to 55162 share no factor with it.
- 4
The digits of 55162 add up to 19, 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
\[ 55162 = 2 \times 27581 \]
55162 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 82746 |
| Euler totient φ(n) | 27580 |
| Square | 3042846244 |
| Cube | 167849484511528 |
| Square root | 234.865919 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 91 |
| Scientific notation | 5.5162 × |
55162 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand one hundred and sixty-two |
| Binary (base 2) | 1101011101111010 |
| Octal (base 8) | 153572 |
| Hexadecimal (base 16) | D77A |
| Base 3 | 2210200001 |
| As time | 55162 seconds = 15 h 19 min 22 s |
Is 55162 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55162 ÷ 2 = 27581) | 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 2) | 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 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 2) | 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 2) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55162 a prime number?
No. 55162 = 2 × 27581, so it is divisible by 2.
What are the factors of 55162?
1, 2, 27581, 55162.
What is 55162 in binary?
1101011101111010 (hexadecimal D77A, octal 153572).
What is the square root of 55162?
About 234.8659.
Is 55162 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 55162?
55162 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 27581, the product of two primes.