The number 55994
55994 is a composite number with 4 divisors. Its prime factorisation is 2 × 27997. Divisors (4): 1, 2, 27997, 55994.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55994: a semiprime: 2 × 27997, the product of two primes.
- 2
55994 is composite. Its prime factorisation is
- 3
The divisors add up to 83994; without 55994 itself that is 28000, so 55994 is deficient (28000 is less than 55994). Euler's totient φ(55994) = 27996 numbers up to 55994 share no factor with it.
- 4
The digits of 55994 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 135 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55994 = 2 \times 27997 \]
55994 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 83994 |
| Euler totient φ(n) | 27996 |
| Square | 3135328036 |
| Cube | 175559558047784 |
| Square root | 236.630514 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 135 |
| Scientific notation | 5.5994 × |
55994 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand nine hundred and ninety-four |
| Binary (base 2) | 1101101010111010 |
| Octal (base 8) | 155272 |
| Hexadecimal (base 16) | DABA |
| Base 3 | 2211210212 |
| As time | 55994 seconds = 15 h 33 min 14 s |
Is 55994 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55994 ÷ 2 = 27997) | 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 | No (remainder 4) | 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 | 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 2) | 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 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 55994 a prime number?
No. 55994 = 2 × 27997, so it is divisible by 2.
What are the factors of 55994?
1, 2, 27997, 55994.
What is 55994 in binary?
1101101010111010 (hexadecimal DABA, octal 155272).
What is the square root of 55994?
About 236.6305.
Is 55994 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 55994?
55994 is a semiprime: 2 × 27997, the product of two primes.