The number 61443
61443 is a composite number with 6 divisors. Its prime factorisation is × 6827. Divisors (6): 1, 3, 9, 6827, 20481, 61443.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
61443 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
61443 is composite. Its prime factorisation is
- 3
The divisors add up to 88764; without 61443 itself that is 27321, so 61443 is deficient (27321 is less than 61443). Euler's totient φ(61443) = 40956 numbers up to 61443 share no factor with it.
- 4
The digits of 61443 add up to 18, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 179 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61443 = 3^{2} \times 6827 \]61443 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 88764 |
| Euler totient φ(n) | 40956 |
| Square | 3775242249 |
| Cube | 231962209505307 |
| Square root | 247.876986 (= 3√6827) |
| Digit sum / digital root | 18 / 9 |
| Collatz steps to 1 | 179 |
| Scientific notation | 6.1443 × |
61443 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand four hundred and forty-three |
| Binary (base 2) | 1111000000000011 |
| Octal (base 8) | 170003 |
| Hexadecimal (base 16) | F003 |
| Base 3 | 10010021200 |
| As time | 61443 seconds = 17 h 4 min 3 s |
Is 61443 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 (61443 ÷ 3 = 20481) | 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 | No (remainder 3) | 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | Yes (61443 ÷ 9 = 6827) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 61443 a prime number?
No. 61443 = × 6827, so it is divisible by 3.
What are the factors of 61443?
1, 3, 9, 6827, 20481, 61443.
What is 61443 in binary?
1111000000000011 (hexadecimal F003, octal 170003).
What is the square root of 61443?
About 247.8770, exactly 3√6827.
Is 61443 divisible by 3?
Yes. Its digits add up to 18, a multiple of 3.
What is special about the number 61443?
It is a composite number with 6 divisors.