The number 9055
9055 is a composite number with 4 divisors. Its prime factorisation is 5 × 1811. Divisors (4): 1, 5, 1811, 9055.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 9055: a semiprime: 5 × 1811, the product of two primes.
- 2
9055 is composite. Its prime factorisation is
- 3
The divisors add up to 10872; without 9055 itself that is 1817, so 9055 is deficient (1817 is less than 9055). Euler's totient φ(9055) = 7240 numbers up to 9055 share no factor with it.
- 4
The digits of 9055 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 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 9055 = 5 \times 1811 \]
9055 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 10872 |
| Euler totient φ(n) | 7240 |
| Square | 81993025 |
| Cube | 742446841375 |
| Square root | 95.157764 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 39 |
| Scientific notation | 9.055 × |
9055 in other forms
| Form | Value |
|---|---|
| In words | nine thousand and fifty-five |
| Binary (base 2) | 10001101011111 |
| Octal (base 8) | 21537 |
| Hexadecimal (base 16) | 235F |
| Base 3 | 110102101 |
| As time | 9055 seconds = 2 h 30 min 55 s |
Is 9055 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 | Yes (9055 ÷ 5 = 1811) | 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 4) | 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 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | 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 9055 a prime number?
No. 9055 = 5 × 1811, so it is divisible by 5.
What are the factors of 9055?
1, 5, 1811, 9055.
What is 9055 in binary?
10001101011111 (hexadecimal 235F, octal 21537).
What is the square root of 9055?
About 95.1578.
Is 9055 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 9055?
9055 is a semiprime: 5 × 1811, the product of two primes.