The number 49001
49001 is a composite number with 4 divisors. Its prime factorisation is 19 × 2579. Divisors (4): 1, 19, 2579, 49001.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49001: a semiprime: 19 × 2579, the product of two primes.
- 2
49001 is composite. Its prime factorisation is
- 3
The divisors add up to 51600; without 49001 itself that is 2599, so 49001 is deficient (2599 is less than 49001). Euler's totient φ(49001) = 46404 numbers up to 49001 share no factor with it.
- 4
The digits of 49001 add up to 14, 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
\[ 49001 = 19 \times 2579 \]
49001 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 51600 |
| Euler totient φ(n) | 46404 |
| Square | 2401098001 |
| Cube | 117656203147001 |
| Square root | 221.361695 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 65 |
| Scientific notation | 4.9001 × |
49001 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand and one |
| Binary (base 2) | 1011111101101001 |
| Octal (base 8) | 137551 |
| Hexadecimal (base 16) | BF69 |
| Base 3 | 2111012212 |
| As time | 49001 seconds = 13 h 36 min 41 s |
Is 49001 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 1) | 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 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 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 1) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49001 a prime number?
No. 49001 = 19 × 2579, so it is divisible by 19.
What are the factors of 49001?
1, 19, 2579, 49001.
What is 49001 in binary?
1011111101101001 (hexadecimal BF69, octal 137551).
What is the square root of 49001?
About 221.3617.
Is 49001 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 49001?
49001 is a semiprime: 19 × 2579, the product of two primes.