The number 5771
5771 is a composite number with 4 divisors. Its prime factorisation is 29 × 199. Divisors (4): 1, 29, 199, 5771.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 5771: a semiprime: 29 × 199, the product of two primes.
- 2
5771 is composite. Its prime factorisation is
- 3
The divisors add up to 6000; without 5771 itself that is 229, so 5771 is deficient (229 is less than 5771). Euler's totient φ(5771) = 5544 numbers up to 5771 share no factor with it.
- 4
The digits of 5771 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 142 steps to reach 1.
LaTeX source of the formulas on this page
\[ 5771 = 29 \times 199 \]
5771 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 6000 |
| Euler totient φ(n) | 5544 |
| Square | 33304441 |
| Cube | 192199929011 |
| Square root | 75.967098 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 142 |
| Scientific notation | 5.771 × |
5771 in other forms
| Form | Value |
|---|---|
| In words | five thousand seven hundred and seventy-one |
| Binary (base 2) | 1011010001011 |
| Octal (base 8) | 13213 |
| Hexadecimal (base 16) | 168B |
| Base 3 | 21220202 |
| As time | 5771 seconds = 1 h 36 min 11 s |
Is 5771 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 1) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 7) | 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 5771 a prime number?
No. 5771 = 29 × 199, so it is divisible by 29.
What are the factors of 5771?
1, 29, 199, 5771.
What is 5771 in binary?
1011010001011 (hexadecimal 168B, octal 13213).
What is the square root of 5771?
About 75.9671.
Is 5771 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 5771?
5771 is a semiprime: 29 × 199, the product of two primes.