The number 71375
71375 is a composite number with 8 divisors. Its prime factorisation is Ć 571. Divisors (8): 1, 5, 25, 125, 571, 2855, 14275, 71375.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 71375: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
71375 is composite. Its prime factorisation is
- 3
The divisors add up to 89232; without 71375 itself that is 17857, so 71375 is deficient (17857 is less than 71375). Euler's totient Ļ(71375) = 57000 numbers up to 71375 share no factor with it.
- 4
The digits of 71375 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 125 steps to reach 1.
LaTeX source of the formulas on this page
\[ 71375 = 5^{3} \times 571 \]71375 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 89232 |
| Euler totient Ļ(n) | 57000 |
| Square | 5094390625 |
| Cube | 363612130859375 |
| Square root | 267.161000 (= 5ā2855) |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 125 |
| Scientific notation | 7.1375 Ć |
71375 in other forms
| Form | Value |
|---|---|
| In words | seventy-one thousand three hundred and seventy-five |
| Binary (base 2) | 10001011011001111 |
| Octal (base 8) | 213317 |
| Hexadecimal (base 16) | 116CF |
| Base 3 | 10121220112 |
| As time | 71375 seconds = 19 h 49 min 35 s |
Is 71375 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 | Yes (71375 Ć· 5 = 14275) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | 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 71375 a prime number?
No. 71375 = Ć 571, so it is divisible by 5.
What are the factors of 71375?
1, 5, 25, 125, 571, 2855, 14275, 71375.
What is 71375 in binary?
10001011011001111 (hexadecimal 116CF, octal 213317).
What is the square root of 71375?
About 267.1610, exactly 5ā2855.
Is 71375 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 71375?
71375 is a happy number: repeatedly adding the squares of its digits reaches 1.