The number 47477
47477 is a composite number with 4 divisors. Its prime factorisation is 197 × 241. Divisors (4): 1, 197, 241, 47477.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 47477: a semiprime: 197 × 241, the product of two primes.
- 2
47477 is composite. Its prime factorisation is
- 3
The divisors add up to 47916; without 47477 itself that is 439, so 47477 is deficient (439 is less than 47477). Euler's totient φ(47477) = 47040 numbers up to 47477 share no factor with it.
- 4
The digits of 47477 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 145 steps to reach 1.
LaTeX source of the formulas on this page
\[ 47477 = 197 \times 241 \]
47477 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 47916 |
| Euler totient φ(n) | 47040 |
| Square | 2254065529 |
| Cube | 107016269120333 |
| Square root | 217.892175 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 145 |
| Scientific notation | 4.7477 × |
47477 in other forms
| Form | Value |
|---|---|
| In words | forty-seven thousand four hundred and seventy-seven |
| Binary (base 2) | 1011100101110101 |
| Octal (base 8) | 134565 |
| Hexadecimal (base 16) | B975 |
| Base 3 | 2102010102 |
| As time | 47477 seconds = 13 h 11 min 17 s |
Is 47477 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 47477 a prime number?
No. 47477 = 197 × 241, so it is divisible by 197.
What are the factors of 47477?
1, 197, 241, 47477.
What is 47477 in binary?
1011100101110101 (hexadecimal B975, octal 134565).
What is the square root of 47477?
About 217.8922.
Is 47477 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 47477?
47477 is a semiprime: 197 × 241, the product of two primes.