The number 55790
55790 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 7 × 797. Divisors (16): 1, 2, 5, 7, 10, 14, 35, 70, 797, 1594, 3985, 5579, 7970, 11158, 27895, 55790.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55790 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55790 is composite. Its prime factorisation is
- 3
The divisors add up to 114912; without 55790 itself that is 59122, so 55790 is abundant (59122 is more than 55790). Euler's totient φ(55790) = 19104 numbers up to 55790 share no factor with it.
- 4
The digits of 55790 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 60 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55790 = 2 \times 5 \times 7 \times 797 \]
55790 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 114912 |
| Euler totient φ(n) | 19104 |
| Square | 3112524100 |
| Cube | 173647719539000 |
| Square root | 236.199069 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 60 |
| Scientific notation | 5.579 × |
55790 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand seven hundred and ninety |
| Binary (base 2) | 1101100111101110 |
| Octal (base 8) | 154756 |
| Hexadecimal (base 16) | D9EE |
| Base 3 | 2211112022 |
| As time | 55790 seconds = 15 h 29 min 50 s |
Is 55790 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55790 ÷ 2 = 27895) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (55790 ÷ 5 = 11158) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (55790 ÷ 7 = 7970) | 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 6) | 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 | Yes (55790 ÷ 10 = 5579) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55790 a prime number?
No. 55790 = 2 × 5 × 7 × 797, so it is divisible by 2.
What are the factors of 55790?
1, 2, 5, 7, 10, 14, 35, 70, 797, 1594, 3985, 5579, 7970, 11158, 27895, 55790.
What is 55790 in binary?
1101100111101110 (hexadecimal D9EE, octal 154756).
What is the square root of 55790?
About 236.1991.
Is 55790 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 55790?
It is a composite number with 16 divisors.