The number 55741
55741 is a composite number with 4 divisors. Its prime factorisation is 7 × 7963. Divisors (4): 1, 7, 7963, 55741.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55741: a semiprime: 7 × 7963, the product of two primes.
- 2
55741 is composite. Its prime factorisation is
- 3
The divisors add up to 63712; without 55741 itself that is 7971, so 55741 is deficient (7971 is less than 55741). Euler's totient φ(55741) = 47772 numbers up to 55741 share no factor with it.
- 4
The digits of 55741 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 153 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55741 = 7 \times 7963 \]
55741 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 63712 |
| Euler totient φ(n) | 47772 |
| Square | 3107059081 |
| Cube | 173190580234021 |
| Square root | 236.095320 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.5741 × |
55741 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand seven hundred and forty-one |
| Binary (base 2) | 1101100110111101 |
| Octal (base 8) | 154675 |
| Hexadecimal (base 16) | D9BD |
| Base 3 | 2211110111 |
| As time | 55741 seconds = 15 h 29 min 1 s |
Is 55741 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 1) | 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 | Yes (55741 ÷ 7 = 7963) | 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 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | 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 55741 a prime number?
No. 55741 = 7 × 7963, so it is divisible by 7.
What are the factors of 55741?
1, 7, 7963, 55741.
What is 55741 in binary?
1101100110111101 (hexadecimal D9BD, octal 154675).
What is the square root of 55741?
About 236.0953.
Is 55741 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 55741?
55741 is a semiprime: 7 × 7963, the product of two primes.