The number 55502
55502 is a composite number with 4 divisors. Its prime factorisation is 2 × 27751. Divisors (4): 1, 2, 27751, 55502.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55502: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 27751, the product of two primes.
- 2
55502 is composite. Its prime factorisation is
- 3
The divisors add up to 83256; without 55502 itself that is 27754, so 55502 is deficient (27754 is less than 55502). Euler's totient φ(55502) = 27750 numbers up to 55502 share no factor with it.
- 4
The digits of 55502 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 140 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55502 = 2 \times 27751 \]
55502 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 83256 |
| Euler totient φ(n) | 27750 |
| Square | 3080472004 |
| Cube | 170972357166008 |
| Square root | 235.588625 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 140 |
| Scientific notation | 5.5502 × |
55502 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand five hundred and two |
| Binary (base 2) | 1101100011001110 |
| Octal (base 8) | 154316 |
| Hexadecimal (base 16) | D8CE |
| Base 3 | 2211010122 |
| As time | 55502 seconds = 15 h 25 min 2 s |
Is 55502 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55502 ÷ 2 = 27751) | 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 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 2) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55502 a prime number?
No. 55502 = 2 × 27751, so it is divisible by 2.
What are the factors of 55502?
1, 2, 27751, 55502.
What is 55502 in binary?
1101100011001110 (hexadecimal D8CE, octal 154316).
What is the square root of 55502?
About 235.5886.
Is 55502 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 55502?
55502 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 27751, the product of two primes.