The number 61444
61444 is a composite number with 6 divisors. Its prime factorisation is × 15361. Divisors (6): 1, 2, 4, 15361, 30722, 61444.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
61444 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
61444 is composite. Its prime factorisation is
- 3
The divisors add up to 107534; without 61444 itself that is 46090, so 61444 is deficient (46090 is less than 61444). Euler's totient φ(61444) = 30720 numbers up to 61444 share no factor with it.
- 4
The digits of 61444 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 179 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61444 = 2^{2} \times 15361 \]61444 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 107534 |
| Euler totient φ(n) | 30720 |
| Square | 3775365136 |
| Cube | 231973535416384 |
| Square root | 247.879003 (= 2√15361) |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 179 |
| Scientific notation | 6.1444 × |
61444 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand four hundred and forty-four |
| Binary (base 2) | 1111000000000100 |
| Octal (base 8) | 170004 |
| Hexadecimal (base 16) | F004 |
| Base 3 | 10010021201 |
| As time | 61444 seconds = 17 h 4 min 4 s |
Is 61444 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (61444 ÷ 2 = 30722) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | Yes (61444 ÷ 4 = 15361) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 4) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 4) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61444 a prime number?
No. 61444 = × 15361, so it is divisible by 2.
What are the factors of 61444?
1, 2, 4, 15361, 30722, 61444.
What is 61444 in binary?
1111000000000100 (hexadecimal F004, octal 170004).
What is the square root of 61444?
About 247.8790, exactly 2√15361.
Is 61444 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 61444?
It is a composite number with 6 divisors.