The number 12550
12550 is a composite number with 12 divisors. Its prime factorisation is 2 × × 251. Divisors (12): 1, 2, 5, 10, 25, 50, 251, 502, 1255, 2510, 6275, 12550.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
12550 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
12550 is composite. Its prime factorisation is
- 3
The divisors add up to 23436; without 12550 itself that is 10886, so 12550 is deficient (10886 is less than 12550). Euler's totient φ(12550) = 5000 numbers up to 12550 share no factor with it.
- 4
The digits of 12550 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 37 steps to reach 1.
LaTeX source of the formulas on this page
\[ 12550 = 2 \times 5^{2} \times 251 \]12550 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 23436 |
| Euler totient φ(n) | 5000 |
| Square | 157502500 |
| Cube | 1976656375000 |
| Square root | 112.026783 (= 5√502) |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 37 |
| Scientific notation | 1.255 × |
12550 in other forms
| Form | Value |
|---|---|
| In words | twelve thousand five hundred and fifty |
| Binary (base 2) | 11000100000110 |
| Octal (base 8) | 30406 |
| Hexadecimal (base 16) | 3106 |
| Base 3 | 122012211 |
| As time | 12550 seconds = 3 h 29 min 10 s |
Is 12550 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (12550 ÷ 2 = 6275) | 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 | Yes (12550 ÷ 5 = 2510) | 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 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 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (12550 ÷ 10 = 1255) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 12550 a prime number?
No. 12550 = 2 × × 251, so it is divisible by 2.
What are the factors of 12550?
1, 2, 5, 10, 25, 50, 251, 502, 1255, 2510, 6275, 12550.
What is 12550 in binary?
11000100000110 (hexadecimal 3106, octal 30406).
What is the square root of 12550?
About 112.0268, exactly 5√502.
Is 12550 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 12550?
It is a composite number with 12 divisors.