The number 80551
80551 is a composite number with 4 divisors. Its prime factorisation is 109 × 739. Divisors (4): 1, 109, 739, 80551.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80551: a semiprime: 109 × 739, the product of two primes.
- 2
80551 is composite. Its prime factorisation is
- 3
The divisors add up to 81400; without 80551 itself that is 849, so 80551 is deficient (849 is less than 80551). Euler's totient φ(80551) = 79704 numbers up to 80551 share no factor with it.
- 4
The digits of 80551 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 120 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80551 = 109 \times 739 \]
80551 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 81400 |
| Euler totient φ(n) | 79704 |
| Square | 6488463601 |
| Cube | 522652231524151 |
| Square root | 283.815081 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 120 |
| Scientific notation | 8.0551 × |
80551 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand five hundred and fifty-one |
| Binary (base 2) | 10011101010100111 |
| Octal (base 8) | 235247 |
| Hexadecimal (base 16) | 13AA7 |
| Base 3 | 11002111101 |
| As time | 80551 seconds = 22 h 22 min 31 s |
Is 80551 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | 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 2) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80551 a prime number?
No. 80551 = 109 × 739, so it is divisible by 109.
What are the factors of 80551?
1, 109, 739, 80551.
What is 80551 in binary?
10011101010100111 (hexadecimal 13AA7, octal 235247).
What is the square root of 80551?
About 283.8151.
Is 80551 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 80551?
80551 is a semiprime: 109 × 739, the product of two primes.