The number 55429
55429 is a composite number with 4 divisors. Its prime factorisation is 11 × 5039. Divisors (4): 1, 11, 5039, 55429.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55429: a semiprime: 11 × 5039, the product of two primes.
- 2
55429 is composite. Its prime factorisation is
- 3
The divisors add up to 60480; without 55429 itself that is 5051, so 55429 is deficient (5051 is less than 55429). Euler's totient φ(55429) = 50380 numbers up to 55429 share no factor with it.
- 4
The digits of 55429 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 153 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55429 = 11 \times 5039 \]
55429 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 60480 |
| Euler totient φ(n) | 50380 |
| Square | 3072374041 |
| Cube | 170298620718589 |
| Square root | 235.433642 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.5429 × |
55429 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand four hundred and twenty-nine |
| Binary (base 2) | 1101100010000101 |
| Octal (base 8) | 154205 |
| Hexadecimal (base 16) | D885 |
| Base 3 | 2211000221 |
| As time | 55429 seconds = 15 h 23 min 49 s |
Is 55429 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 4) | 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 3) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (55429 ÷ 11 = 5039) | 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 55429 a prime number?
No. 55429 = 11 × 5039, so it is divisible by 11.
What are the factors of 55429?
1, 11, 5039, 55429.
What is 55429 in binary?
1101100010000101 (hexadecimal D885, octal 154205).
What is the square root of 55429?
About 235.4336.
Is 55429 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 55429?
55429 is a semiprime: 11 × 5039, the product of two primes.