The number 50729
50729 is a composite number with 4 divisors. Its prime factorisation is 7 × 7247. Divisors (4): 1, 7, 7247, 50729.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 50729: a semiprime: 7 × 7247, the product of two primes.
- 2
50729 is composite. Its prime factorisation is
- 3
The divisors add up to 57984; without 50729 itself that is 7255, so 50729 is deficient (7255 is less than 50729). Euler's totient φ(50729) = 43476 numbers up to 50729 share no factor with it.
- 4
The digits of 50729 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 202 steps to reach 1.
LaTeX source of the formulas on this page
\[ 50729 = 7 \times 7247 \]
50729 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57984 |
| Euler totient φ(n) | 43476 |
| Square | 2573431441 |
| Cube | 130547603570489 |
| Square root | 225.230993 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 202 |
| Scientific notation | 5.0729 × |
50729 in other forms
| Form | Value |
|---|---|
| In words | fifty thousand seven hundred and twenty-nine |
| Binary (base 2) | 1100011000101001 |
| Octal (base 8) | 143051 |
| Hexadecimal (base 16) | C629 |
| Base 3 | 2120120212 |
| As time | 50729 seconds = 14 h 5 min 29 s |
Is 50729 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | 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 | Yes (50729 ÷ 7 = 7247) | 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 1) | 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 9) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 50729 a prime number?
No. 50729 = 7 × 7247, so it is divisible by 7.
What are the factors of 50729?
1, 7, 7247, 50729.
What is 50729 in binary?
1100011000101001 (hexadecimal C629, octal 143051).
What is the square root of 50729?
About 225.2310.
Is 50729 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 50729?
50729 is a semiprime: 7 × 7247, the product of two primes.