The number 57449
57449 is a composite number with 8 divisors. Its prime factorisation is 7 × 29 × 283. Divisors (8): 1, 7, 29, 203, 283, 1981, 8207, 57449.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 57449: a Harshad number: divisible by its digit sum 29.
- 2
57449 is composite. Its prime factorisation is
- 3
The divisors add up to 68160; without 57449 itself that is 10711, so 57449 is deficient (10711 is less than 57449). Euler's totient φ(57449) = 47376 numbers up to 57449 share no factor with it.
- 4
The digits of 57449 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 78 steps to reach 1.
LaTeX source of the formulas on this page
\[ 57449 = 7 \times 29 \times 283 \]
57449 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 68160 |
| Euler totient φ(n) | 47376 |
| Square | 3300387601 |
| Cube | 189603967289849 |
| Square root | 239.685210 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 78 |
| Scientific notation | 5.7449 × |
57449 in other forms
| Form | Value |
|---|---|
| In words | fifty-seven thousand four hundred and forty-nine |
| Binary (base 2) | 1110000001101001 |
| Octal (base 8) | 160151 |
| Hexadecimal (base 16) | E069 |
| Base 3 | 2220210202 |
| As time | 57449 seconds = 15 h 57 min 29 s |
Is 57449 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 4) | 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 | Yes (57449 ÷ 7 = 8207) | 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 2) | 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 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 57449 a prime number?
No. 57449 = 7 × 29 × 283, so it is divisible by 7.
What are the factors of 57449?
1, 7, 29, 203, 283, 1981, 8207, 57449.
What is 57449 in binary?
1110000001101001 (hexadecimal E069, octal 160151).
What is the square root of 57449?
About 239.6852.
Is 57449 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 57449?
57449 is a Harshad number: divisible by its digit sum 29.