The number 55477
55477 is a composite number with 4 divisors. Its prime factorisation is 29 × 1913. Divisors (4): 1, 29, 1913, 55477.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55477: a semiprime: 29 × 1913, the product of two primes.
- 2
55477 is composite. Its prime factorisation is
- 3
The divisors add up to 57420; without 55477 itself that is 1943, so 55477 is deficient (1943 is less than 55477). Euler's totient φ(55477) = 53536 numbers up to 55477 share no factor with it.
- 4
The digits of 55477 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 153 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55477 = 29 \times 1913 \]
55477 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57420 |
| Euler totient φ(n) | 53536 |
| Square | 3077697529 |
| Cube | 170741425816333 |
| Square root | 235.535560 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.5477 × |
55477 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand four hundred and seventy-seven |
| Binary (base 2) | 1101100010110101 |
| Octal (base 8) | 154265 |
| Hexadecimal (base 16) | D8B5 |
| Base 3 | 2211002201 |
| As time | 55477 seconds = 15 h 24 min 37 s |
Is 55477 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 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | 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 1) | 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 5) | 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 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55477 a prime number?
No. 55477 = 29 × 1913, so it is divisible by 29.
What are the factors of 55477?
1, 29, 1913, 55477.
What is 55477 in binary?
1101100010110101 (hexadecimal D8B5, octal 154265).
What is the square root of 55477?
About 235.5356.
Is 55477 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 55477?
55477 is a semiprime: 29 × 1913, the product of two primes.