The number 49445
49445 is a composite number with 16 divisors. Its prime factorisation is 5 × 11 × 29 × 31. Divisors (16): 1, 5, 11, 29, 31, 55, 145, 155, 319, 341, 899, 1595, 1705, 4495, 9889, 49445.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
49445 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49445 is composite. Its prime factorisation is
- 3
The divisors add up to 69120; without 49445 itself that is 19675, so 49445 is deficient (19675 is less than 49445). Euler's totient φ(49445) = 33600 numbers up to 49445 share no factor with it.
- 4
The digits of 49445 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49445 = 5 \times 11 \times 29 \times 31 \]
49445 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 69120 |
| Euler totient φ(n) | 33600 |
| Square | 2444808025 |
| Cube | 120883532796125 |
| Square root | 222.362317 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 96 |
| Scientific notation | 4.9445 × |
49445 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand four hundred and forty-five |
| Binary (base 2) | 1100000100100101 |
| Octal (base 8) | 140445 |
| Hexadecimal (base 16) | C125 |
| Base 3 | 2111211022 |
| As time | 49445 seconds = 13 h 44 min 5 s |
Is 49445 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 | Yes (49445 ÷ 5 = 9889) | 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 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 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (49445 ÷ 11 = 4495) | 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 49445 a prime number?
No. 49445 = 5 × 11 × 29 × 31, so it is divisible by 5.
What are the factors of 49445?
1, 5, 11, 29, 31, 55, 145, 155, 319, 341, 899, 1595, 1705, 4495, 9889, 49445.
What is 49445 in binary?
1100000100100101 (hexadecimal C125, octal 140445).
What is the square root of 49445?
About 222.3623.
Is 49445 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 49445?
It is a composite number with 16 divisors.