The number 80550
80550 is a composite number with 36 divisors. Its prime factorisation is 2 × × × 179. Divisors (36): 1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150 … 80550.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80550: a Harshad number: divisible by its digit sum 18.
- 2
80550 is composite. Its prime factorisation is
- 3
The divisors add up to 217620; without 80550 itself that is 137070, so 80550 is abundant (137070 is more than 80550). Euler's totient φ(80550) = 21360 numbers up to 80550 share no factor with it.
- 4
The digits of 80550 add up to 18, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 120 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80550 = 2 \times 3^{2} \times 5^{2} \times 179 \]80550 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 36 |
| Sum of divisors | 217620 |
| Euler totient φ(n) | 21360 |
| Square | 6488302500 |
| Cube | 522632766375000 |
| Square root | 283.813319 (= 15√358) |
| Digit sum / digital root | 18 / 9 |
| Collatz steps to 1 | 120 |
| Scientific notation | 8.055 × |
80550 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand five hundred and fifty |
| Binary (base 2) | 10011101010100110 |
| Octal (base 8) | 235246 |
| Hexadecimal (base 16) | 13AA6 |
| Base 3 | 11002111100 |
| As time | 80550 seconds = 22 h 22 min 30 s |
Is 80550 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80550 ÷ 2 = 40275) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (80550 ÷ 3 = 26850) | 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 (80550 ÷ 5 = 16110) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (80550 ÷ 6 = 13425) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (80550 ÷ 9 = 8950) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (80550 ÷ 10 = 8055) | 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 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80550 a prime number?
No. 80550 = 2 × × × 179, so it is divisible by 2.
What are the factors of 80550?
1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 179, 225, 358, 450, 537, 895, 1074, 1611, 1790, 2685, 3222, 4475, 5370, 8055, 8950, 13425, 16110, 26850, 40275, 80550.
What is 80550 in binary?
10011101010100110 (hexadecimal 13AA6, octal 235246).
What is the square root of 80550?
About 283.8133, exactly 15√358.
Is 80550 divisible by 3?
Yes. Its digits add up to 18, a multiple of 3.
What is special about the number 80550?
80550 is a Harshad number: divisible by its digit sum 18.