The number 4771
4771 is a composite number with 4 divisors. Its prime factorisation is 13 × 367. Divisors (4): 1, 13, 367, 4771.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 4771: a semiprime: 13 × 367, the product of two primes.
- 2
4771 is composite. Its prime factorisation is
- 3
The divisors add up to 5152; without 4771 itself that is 381, so 4771 is deficient (381 is less than 4771). Euler's totient φ(4771) = 4392 numbers up to 4771 share no factor with it.
- 4
The digits of 4771 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 103 steps to reach 1.
LaTeX source of the formulas on this page
\[ 4771 = 13 \times 367 \]
4771 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 5152 |
| Euler totient φ(n) | 4392 |
| Square | 22762441 |
| Cube | 108599606011 |
| Square root | 69.072426 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 103 |
| Scientific notation | 4.771 × |
4771 in other forms
| Form | Value |
|---|---|
| In words | four thousand seven hundred and seventy-one |
| Binary (base 2) | 1001010100011 |
| Octal (base 8) | 11243 |
| Hexadecimal (base 16) | 12A3 |
| Base 3 | 20112201 |
| As time | 4771 seconds = 1 h 19 min 31 s |
Is 4771 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 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 1) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 4771 a prime number?
No. 4771 = 13 × 367, so it is divisible by 13.
What are the factors of 4771?
1, 13, 367, 4771.
What is 4771 in binary?
1001010100011 (hexadecimal 12A3, octal 11243).
What is the square root of 4771?
About 69.0724.
Is 4771 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 4771?
4771 is a semiprime: 13 × 367, the product of two primes.