The number 55427
55427 is a composite number with 4 divisors. Its prime factorisation is 43 × 1289. Divisors (4): 1, 43, 1289, 55427.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55427: a semiprime: 43 × 1289, the product of two primes.
- 2
55427 is composite. Its prime factorisation is
- 3
The divisors add up to 56760; without 55427 itself that is 1333, so 55427 is deficient (1333 is less than 55427). Euler's totient φ(55427) = 54096 numbers up to 55427 share no factor with it.
- 4
The digits of 55427 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 153 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55427 = 43 \times 1289 \]
55427 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 56760 |
| Euler totient φ(n) | 54096 |
| Square | 3072152329 |
| Cube | 170280187139483 |
| Square root | 235.429395 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.5427 × |
55427 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand four hundred and twenty-seven |
| Binary (base 2) | 1101100010000011 |
| Octal (base 8) | 154203 |
| Hexadecimal (base 16) | D883 |
| Base 3 | 2211000212 |
| As time | 55427 seconds = 15 h 23 min 47 s |
Is 55427 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 | No (remainder 2) | 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 1) | 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 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | 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 55427 a prime number?
No. 55427 = 43 × 1289, so it is divisible by 43.
What are the factors of 55427?
1, 43, 1289, 55427.
What is 55427 in binary?
1101100010000011 (hexadecimal D883, octal 154203).
What is the square root of 55427?
About 235.4294.
Is 55427 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 55427?
55427 is a semiprime: 43 × 1289, the product of two primes.