The number 5855
5855 is a composite number with 4 divisors. Its prime factorisation is 5 × 1171. Divisors (4): 1, 5, 1171, 5855.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 5855: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 5 × 1171, the product of two primes.
- 2
5855 is composite. Its prime factorisation is
- 3
The divisors add up to 7032; without 5855 itself that is 1177, so 5855 is deficient (1177 is less than 5855). Euler's totient φ(5855) = 4680 numbers up to 5855 share no factor with it.
- 4
The digits of 5855 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 173 steps to reach 1.
LaTeX source of the formulas on this page
\[ 5855 = 5 \times 1171 \]
5855 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 7032 |
| Euler totient φ(n) | 4680 |
| Square | 34281025 |
| Cube | 200715401375 |
| Square root | 76.517972 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 173 |
| Scientific notation | 5.855 × |
5855 in other forms
| Form | Value |
|---|---|
| In words | five thousand eight hundred and fifty-five |
| Binary (base 2) | 1011011011111 |
| Octal (base 8) | 13337 |
| Hexadecimal (base 16) | 16DF |
| Base 3 | 22000212 |
| As time | 5855 seconds = 1 h 37 min 35 s |
Is 5855 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 (5855 ÷ 5 = 1171) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 3) | 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 5855 a prime number?
No. 5855 = 5 × 1171, so it is divisible by 5.
What are the factors of 5855?
1, 5, 1171, 5855.
What is 5855 in binary?
1011011011111 (hexadecimal 16DF, octal 13337).
What is the square root of 5855?
About 76.5180.
Is 5855 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 5855?
5855 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 5 × 1171, the product of two primes.