The number 55789
55789 is a composite number with 4 divisors. Its prime factorisation is 47 × 1187. Divisors (4): 1, 47, 1187, 55789.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55789: a semiprime: 47 × 1187, the product of two primes.
- 2
55789 is composite. Its prime factorisation is
- 3
The divisors add up to 57024; without 55789 itself that is 1235, so 55789 is deficient (1235 is less than 55789). Euler's totient φ(55789) = 54556 numbers up to 55789 share no factor with it.
- 4
The digits of 55789 add up to 34, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 60 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55789 = 47 \times 1187 \]
55789 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57024 |
| Euler totient φ(n) | 54556 |
| Square | 3112412521 |
| Cube | 173638382134069 |
| Square root | 236.196952 |
| Digit sum / digital root | 34 / 7 |
| Collatz steps to 1 | 60 |
| Scientific notation | 5.5789 × |
55789 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand seven hundred and eighty-nine |
| Binary (base 2) | 1101100111101101 |
| Octal (base 8) | 154755 |
| Hexadecimal (base 16) | D9ED |
| Base 3 | 2211112021 |
| As time | 55789 seconds = 15 h 29 min 49 s |
Is 55789 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 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 7) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55789 a prime number?
No. 55789 = 47 × 1187, so it is divisible by 47.
What are the factors of 55789?
1, 47, 1187, 55789.
What is 55789 in binary?
1101100111101101 (hexadecimal D9ED, octal 154755).
What is the square root of 55789?
About 236.1970.
Is 55789 divisible by 3?
No. Its digits add up to 34, which is not a multiple of 3.
What is special about the number 55789?
55789 is a semiprime: 47 × 1187, the product of two primes.