The number 55122
55122 is a composite number with 8 divisors. Its prime factorisation is 2 × 3 × 9187. Divisors (8): 1, 2, 3, 6, 9187, 18374, 27561, 55122.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55122 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55122 is composite. Its prime factorisation is
- 3
The divisors add up to 110256; without 55122 itself that is 55134, so 55122 is abundant (55134 is more than 55122). Euler's totient φ(55122) = 18372 numbers up to 55122 share no factor with it.
- 4
The digits of 55122 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 140 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55122 = 2 \times 3 \times 9187 \]
55122 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 110256 |
| Euler totient φ(n) | 18372 |
| Square | 3038434884 |
| Cube | 167484607675848 |
| Square root | 234.780749 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 140 |
| Scientific notation | 5.5122 × |
55122 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand one hundred and twenty-two |
| Binary (base 2) | 1101011101010010 |
| Octal (base 8) | 153522 |
| Hexadecimal (base 16) | D752 |
| Base 3 | 2210121120 |
| As time | 55122 seconds = 15 h 18 min 42 s |
Is 55122 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55122 ÷ 2 = 27561) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (55122 ÷ 3 = 18374) | 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 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (55122 ÷ 6 = 9187) | 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 2) | 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 2) | 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 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55122 a prime number?
No. 55122 = 2 × 3 × 9187, so it is divisible by 2.
What are the factors of 55122?
1, 2, 3, 6, 9187, 18374, 27561, 55122.
What is 55122 in binary?
1101011101010010 (hexadecimal D752, octal 153522).
What is the square root of 55122?
About 234.7807.
Is 55122 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 55122?
It is a composite number with 8 divisors.