The number 47071
47071 is a composite number with 4 divisors. Its prime factorisation is 103 × 457. Divisors (4): 1, 103, 457, 47071.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47071: a semiprime: 103 × 457, the product of two primes.
- 2
47071 is composite. Its prime factorisation is
- 3
The divisors add up to 47632; without 47071 itself that is 561, so 47071 is deficient (561 is less than 47071). Euler's totient φ(47071) = 46512 numbers up to 47071 share no factor with it.
- 4
The digits of 47071 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 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47071 = 103 \times 457 \]
47071 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 47632 |
| Euler totient φ(n) | 46512 |
| Square | 2215679041 |
| Cube | 104294228138911 |
| Square root | 216.958521 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.7071 × |
47071 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand and seventy-one |
| Binary (base 2) | 1011011111011111 |
| Octal (base 8) | 133737 |
| Hexadecimal (base 16) | B7DF |
| Base 3 | 2101120101 |
| As time | 47071 seconds = 13 h 4 min 31 s |
Is 47071 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 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 7) | 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 2) | 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 47071 a prime number?
No. 47071 = 103 × 457, so it is divisible by 103.
What are the factors of 47071?
1, 103, 457, 47071.
What is 47071 in binary?
1011011111011111 (hexadecimal B7DF, octal 133737).
What is the square root of 47071?
About 216.9585.
Is 47071 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 47071?
47071 is a semiprime: 103 × 457, the product of two primes.