The number 49013
49013 is a composite number with 4 divisors. Its prime factorisation is 23 × 2131. Divisors (4): 1, 23, 2131, 49013.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49013: a semiprime: 23 × 2131, the product of two primes.
- 2
49013 is composite. Its prime factorisation is
- 3
The divisors add up to 51168; without 49013 itself that is 2155, so 49013 is deficient (2155 is less than 49013). Euler's totient φ(49013) = 46860 numbers up to 49013 share no factor with it.
- 4
The digits of 49013 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 65 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49013 = 23 \times 2131 \]
49013 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 51168 |
| Euler totient φ(n) | 46860 |
| Square | 2402274169 |
| Cube | 117742663845197 |
| Square root | 221.388798 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 65 |
| Scientific notation | 4.9013 × |
49013 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand and thirteen |
| Binary (base 2) | 1011111101110101 |
| Octal (base 8) | 137565 |
| Hexadecimal (base 16) | BF75 |
| Base 3 | 2111020022 |
| As time | 49013 seconds = 13 h 36 min 53 s |
Is 49013 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 3) | 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 6) | 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 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 49013 a prime number?
No. 49013 = 23 × 2131, so it is divisible by 23.
What are the factors of 49013?
1, 23, 2131, 49013.
What is 49013 in binary?
1011111101110101 (hexadecimal BF75, octal 137565).
What is the square root of 49013?
About 221.3888.
Is 49013 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 49013?
49013 is a semiprime: 23 × 2131, the product of two primes.