The number 55148
55148 is a composite number with 12 divisors. Its prime factorisation is × 17 × 811. Divisors (12): 1, 2, 4, 17, 34, 68, 811, 1622, 3244, 13787, 27574, 55148.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55148 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55148 is composite. Its prime factorisation is
- 3
The divisors add up to 102312; without 55148 itself that is 47164, so 55148 is deficient (47164 is less than 55148). Euler's totient φ(55148) = 25920 numbers up to 55148 share no factor with it.
- 4
The digits of 55148 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 60 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55148 = 2^{2} \times 17 \times 811 \]55148 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 102312 |
| Euler totient φ(n) | 25920 |
| Square | 3041301904 |
| Cube | 167721717401792 |
| Square root | 234.836113 (= 2√13787) |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 60 |
| Scientific notation | 5.5148 × |
55148 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand one hundred and forty-eight |
| Binary (base 2) | 1101011101101100 |
| Octal (base 8) | 153554 |
| Hexadecimal (base 16) | D76C |
| Base 3 | 2210122112 |
| As time | 55148 seconds = 15 h 19 min 8 s |
Is 55148 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55148 ÷ 2 = 27574) | 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 | Yes (55148 ÷ 4 = 13787) | 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 2) | 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 4) | 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 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 8) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55148 a prime number?
No. 55148 = × 17 × 811, so it is divisible by 2.
What are the factors of 55148?
1, 2, 4, 17, 34, 68, 811, 1622, 3244, 13787, 27574, 55148.
What is 55148 in binary?
1101011101101100 (hexadecimal D76C, octal 153554).
What is the square root of 55148?
About 234.8361, exactly 2√13787.
Is 55148 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 55148?
It is a composite number with 12 divisors.