The number 55436
55436 is a composite number with 6 divisors. Its prime factorisation is × 13859. Divisors (6): 1, 2, 4, 13859, 27718, 55436.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55436 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55436 is composite. Its prime factorisation is
- 3
The divisors add up to 97020; without 55436 itself that is 41584, so 55436 is deficient (41584 is less than 55436). Euler's totient φ(55436) = 27716 numbers up to 55436 share no factor with it.
- 4
The digits of 55436 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 153 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55436 = 2^{2} \times 13859 \]55436 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 97020 |
| Euler totient φ(n) | 27716 |
| Square | 3073150096 |
| Cube | 170363148721856 |
| Square root | 235.448508 (= 2√13859) |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 153 |
| Scientific notation | 5.5436 × |
55436 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand four hundred and thirty-six |
| Binary (base 2) | 1101100010001100 |
| Octal (base 8) | 154214 |
| Hexadecimal (base 16) | D88C |
| Base 3 | 2211001012 |
| As time | 55436 seconds = 15 h 23 min 56 s |
Is 55436 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55436 ÷ 2 = 27718) | 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 | Yes (55436 ÷ 4 = 13859) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | 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 4) | 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 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 8) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55436 a prime number?
No. 55436 = × 13859, so it is divisible by 2.
What are the factors of 55436?
1, 2, 4, 13859, 27718, 55436.
What is 55436 in binary?
1101100010001100 (hexadecimal D88C, octal 154214).
What is the square root of 55436?
About 235.4485, exactly 2√13859.
Is 55436 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 55436?
It is a composite number with 6 divisors.