The number 50747
50747 is a composite number with 4 divisors. Its prime factorisation is 31 × 1637. Divisors (4): 1, 31, 1637, 50747.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 50747: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 31 × 1637, the product of two primes.
- 2
50747 is composite. Its prime factorisation is
- 3
The divisors add up to 52416; without 50747 itself that is 1669, so 50747 is deficient (1669 is less than 50747). Euler's totient φ(50747) = 49080 numbers up to 50747 share no factor with it.
- 4
The digits of 50747 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 65 steps to reach 1.
LaTeX source of the formulas on this page
\[ 50747 = 31 \times 1637 \]
50747 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 52416 |
| Euler totient φ(n) | 49080 |
| Square | 2575258009 |
| Cube | 130686618182723 |
| Square root | 225.270948 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 65 |
| Scientific notation | 5.0747 × |
50747 in other forms
| Form | Value |
|---|---|
| In words | fifty thousand seven hundred and forty-seven |
| Binary (base 2) | 1100011000111011 |
| Octal (base 8) | 143073 |
| Hexadecimal (base 16) | C63B |
| Base 3 | 2120121112 |
| As time | 50747 seconds = 14 h 5 min 47 s |
Is 50747 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 2) | 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 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 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 50747 a prime number?
No. 50747 = 31 × 1637, so it is divisible by 31.
What are the factors of 50747?
1, 31, 1637, 50747.
What is 50747 in binary?
1100011000111011 (hexadecimal C63B, octal 143073).
What is the square root of 50747?
About 225.2709.
Is 50747 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 50747?
50747 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 31 × 1637, the product of two primes.