The number 47171
47171 is a composite number with 4 divisors. Its prime factorisation is 43 × 1097. Divisors (4): 1, 43, 1097, 47171.
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How to work it out
- 1
What is special about 47171: a semiprime: 43 × 1097, the product of two primes.
- 2
47171 is composite. Its prime factorisation is
- 3
The divisors add up to 48312; without 47171 itself that is 1141, so 47171 is deficient (1141 is less than 47171). Euler's totient φ(47171) = 46032 numbers up to 47171 share no factor with it.
- 4
The digits of 47171 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 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47171 = 43 \times 1097 \]
47171 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 48312 |
| Euler totient φ(n) | 46032 |
| Square | 2225103241 |
| Cube | 104960344981211 |
| Square root | 217.188858 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 83 |
| Scientific notation | 4.7171 × |
47171 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand one hundred and seventy-one |
| Binary (base 2) | 1011100001000011 |
| Octal (base 8) | 134103 |
| Hexadecimal (base 16) | B843 |
| Base 3 | 2101201002 |
| As time | 47171 seconds = 13 h 6 min 11 s |
Is 47171 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 5) | 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 3) | 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 47171 a prime number?
No. 47171 = 43 × 1097, so it is divisible by 43.
What are the factors of 47171?
1, 43, 1097, 47171.
What is 47171 in binary?
1011100001000011 (hexadecimal B843, octal 134103).
What is the square root of 47171?
About 217.1889.
Is 47171 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 47171?
47171 is a semiprime: 43 × 1097, the product of two primes.