The number 49521
49521 is a composite number with 8 divisors. Its prime factorisation is 3 × 17 × 971. Divisors (8): 1, 3, 17, 51, 971, 2913, 16507, 49521.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
49521 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49521 is composite. Its prime factorisation is
- 3
The divisors add up to 69984; without 49521 itself that is 20463, so 49521 is deficient (20463 is less than 49521). Euler's totient φ(49521) = 31040 numbers up to 49521 share no factor with it.
- 4
The digits of 49521 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49521 = 3 \times 17 \times 971 \]
49521 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 69984 |
| Euler totient φ(n) | 31040 |
| Square | 2452329441 |
| Cube | 121441806247761 |
| Square root | 222.533144 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.9521 × |
49521 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand five hundred and twenty-one |
| Binary (base 2) | 1100000101110001 |
| Octal (base 8) | 140561 |
| Hexadecimal (base 16) | C171 |
| Base 3 | 2111221010 |
| As time | 49521 seconds = 13 h 45 min 21 s |
Is 49521 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 | Yes (49521 ÷ 3 = 16507) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 3) | 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 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49521 a prime number?
No. 49521 = 3 × 17 × 971, so it is divisible by 3.
What are the factors of 49521?
1, 3, 17, 51, 971, 2913, 16507, 49521.
What is 49521 in binary?
1100000101110001 (hexadecimal C171, octal 140561).
What is the square root of 49521?
About 222.5331.
Is 49521 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 49521?
It is a composite number with 8 divisors.