The number 55878
55878 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 67 × 139. Divisors (16): 1, 2, 3, 6, 67, 134, 139, 201, 278, 402, 417, 834, 9313, 18626, 27939, 55878.
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How to work it out
- 1
55878 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55878 is composite. Its prime factorisation is
- 3
The divisors add up to 114240; without 55878 itself that is 58362, so 55878 is abundant (58362 is more than 55878). Euler's totient φ(55878) = 18216 numbers up to 55878 share no factor with it.
- 4
The digits of 55878 add up to 33, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 109 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55878 = 2 \times 3 \times 67 \times 139 \]
55878 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 114240 |
| Euler totient φ(n) | 18216 |
| Square | 3122350884 |
| Cube | 174470722696152 |
| Square root | 236.385279 |
| Digit sum / digital root | 33 / 6 |
| Collatz steps to 1 | 109 |
| Scientific notation | 5.5878 × |
55878 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand eight hundred and seventy-eight |
| Binary (base 2) | 1101101001000110 |
| Octal (base 8) | 155106 |
| Hexadecimal (base 16) | DA46 |
| Base 3 | 2211122120 |
| As time | 55878 seconds = 15 h 31 min 18 s |
Is 55878 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55878 ÷ 2 = 27939) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (55878 ÷ 3 = 18626) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | 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 | Yes (55878 ÷ 6 = 9313) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | 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 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55878 a prime number?
No. 55878 = 2 × 3 × 67 × 139, so it is divisible by 2.
What are the factors of 55878?
1, 2, 3, 6, 67, 134, 139, 201, 278, 402, 417, 834, 9313, 18626, 27939, 55878.
What is 55878 in binary?
1101101001000110 (hexadecimal DA46, octal 155106).
What is the square root of 55878?
About 236.3853.
Is 55878 divisible by 3?
Yes. Its digits add up to 33, a multiple of 3.
What is special about the number 55878?
It is a composite number with 16 divisors.