The number 50989
50989 is the 5221st prime number. Its only divisors are 1 and 50989.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 50989: the 5221st prime number.
- 2
50989 is prime, so its only factors are 1 and 50989. It is the 5221st prime; the next prime is 50993 and the one before is 50971.
- 3
The divisors add up to 50990; without 50989 itself that is 1, so 50989 is deficient (1 is less than 50989). Euler's totient φ(50989) = 50988 numbers up to 50989 share no factor with it.
- 4
The digits of 50989 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 83 steps to reach 1.
50989 at a glance
| Property | Value |
|---|---|
| Type | prime |
| Number of divisors | 2 |
| Sum of divisors | 50990 |
| Euler totient φ(n) | 50988 |
| Square | 2599878121 |
| Cube | 132565185511669 |
| Square root | 225.807440 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 83 |
| Scientific notation | 5.0989 × |
50989 in other forms
| Form | Value |
|---|---|
| In words | fifty thousand nine hundred and eighty-nine |
| Binary (base 2) | 1100011100101101 |
| Octal (base 8) | 143455 |
| Hexadecimal (base 16) | C72D |
| Base 3 | 2120221111 |
| As time | 50989 seconds = 14 h 9 min 49 s |
Is 50989 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 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 50989 a prime number?
Yes. 50989 is divisible only by 1 and itself.
What are the factors of 50989?
1, 50989.
What is 50989 in binary?
1100011100101101 (hexadecimal C72D, octal 143455).
What is the square root of 50989?
About 225.8074.
Is 50989 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 50989?
50989 is the 5221st prime number.