The number 55195
55195 is a composite number with 16 divisors. Its prime factorisation is 5 × 7 × 19 × 83. Divisors (16): 1, 5, 7, 19, 35, 83, 95, 133, 415, 581, 665, 1577, 2905, 7885, 11039, 55195.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55195 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55195 is composite. Its prime factorisation is
- 3
The divisors add up to 80640; without 55195 itself that is 25445, so 55195 is deficient (25445 is less than 55195). Euler's totient φ(55195) = 35424 numbers up to 55195 share no factor with it.
- 4
The digits of 55195 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 122 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55195 = 5 \times 7 \times 19 \times 83 \]
55195 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 80640 |
| Euler totient φ(n) | 35424 |
| Square | 3046488025 |
| Cube | 168150906539875 |
| Square root | 234.936162 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 122 |
| Scientific notation | 5.5195 × |
55195 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand one hundred and ninety-five |
| Binary (base 2) | 1101011110011011 |
| Octal (base 8) | 153633 |
| Hexadecimal (base 16) | D79B |
| Base 3 | 2210201021 |
| As time | 55195 seconds = 15 h 19 min 55 s |
Is 55195 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 | No (remainder 1) | 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 | Yes (55195 ÷ 5 = 11039) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (55195 ÷ 7 = 7885) | 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 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55195 a prime number?
No. 55195 = 5 × 7 × 19 × 83, so it is divisible by 5.
What are the factors of 55195?
1, 5, 7, 19, 35, 83, 95, 133, 415, 581, 665, 1577, 2905, 7885, 11039, 55195.
What is 55195 in binary?
1101011110011011 (hexadecimal D79B, octal 153633).
What is the square root of 55195?
About 234.9362.
Is 55195 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 55195?
It is a composite number with 16 divisors.