The number 47055
47055 is a composite number with 8 divisors. Its prime factorisation is 3 × 5 × 3137. Divisors (8): 1, 3, 5, 15, 3137, 9411, 15685, 47055.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
47055 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
47055 is composite. Its prime factorisation is
- 3
The divisors add up to 75312; without 47055 itself that is 28257, so 47055 is deficient (28257 is less than 47055). Euler's totient φ(47055) = 25088 numbers up to 47055 share no factor with it.
- 4
The digits of 47055 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 83 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47055 = 3 \times 5 \times 3137 \]
47055 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 75312 |
| Euler totient φ(n) | 25088 |
| Square | 2214173025 |
| Cube | 104187911691375 |
| Square root | 216.921645 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 83 |
| Scientific notation | 4.7055 × |
47055 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand and fifty-five |
| Binary (base 2) | 1011011111001111 |
| Octal (base 8) | 133717 |
| Hexadecimal (base 16) | B7CF |
| Base 3 | 2101112210 |
| As time | 47055 seconds = 13 h 4 min 15 s |
Is 47055 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 | Yes (47055 ÷ 3 = 15685) | 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 (47055 ÷ 5 = 9411) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47055 a prime number?
No. 47055 = 3 × 5 × 3137, so it is divisible by 3.
What are the factors of 47055?
1, 3, 5, 15, 3137, 9411, 15685, 47055.
What is 47055 in binary?
1011011111001111 (hexadecimal B7CF, octal 133717).
What is the square root of 47055?
About 216.9216.
Is 47055 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 47055?
It is a composite number with 8 divisors.