The number 33155
33155 is a composite number with 8 divisors. Its prime factorisation is 5 × 19 × 349. Divisors (8): 1, 5, 19, 95, 349, 1745, 6631, 33155.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
33155 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
33155 is composite. Its prime factorisation is
- 3
The divisors add up to 42000; without 33155 itself that is 8845, so 33155 is deficient (8845 is less than 33155). Euler's totient φ(33155) = 25056 numbers up to 33155 share no factor with it.
- 4
The digits of 33155 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 116 steps to reach 1.
LaTeX source of the formulas on this page
\[ 33155 = 5 \times 19 \times 349 \]
33155 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 42000 |
| Euler totient φ(n) | 25056 |
| Square | 1099254025 |
| Cube | 36445767198875 |
| Square root | 182.085145 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 116 |
| Scientific notation | 3.3155 × |
33155 in other forms
| Form | Value |
|---|---|
| In words | thirty-three thousand one hundred and fifty-five |
| Binary (base 2) | 1000000110000011 |
| Octal (base 8) | 100603 |
| Hexadecimal (base 16) | 8183 |
| Base 3 | 1200110222 |
| As time | 33155 seconds = 9 h 12 min 35 s |
Is 33155 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 2) | 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 (33155 ÷ 5 = 6631) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 33155 a prime number?
No. 33155 = 5 × 19 × 349, so it is divisible by 5.
What are the factors of 33155?
1, 5, 19, 95, 349, 1745, 6631, 33155.
What is 33155 in binary?
1000000110000011 (hexadecimal 8183, octal 100603).
What is the square root of 33155?
About 182.0851.
Is 33155 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 33155?
It is a composite number with 8 divisors.