The number 55101
55101 is a composite number with 4 divisors. Its prime factorisation is 3 × 18367. Divisors (4): 1, 3, 18367, 55101.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55101: a semiprime: 3 × 18367, the product of two primes.
- 2
55101 is composite. Its prime factorisation is
- 3
The divisors add up to 73472; without 55101 itself that is 18371, so 55101 is deficient (18371 is less than 55101). Euler's totient φ(55101) = 36732 numbers up to 55101 share no factor with it.
- 4
The digits of 55101 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 171 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55101 = 3 \times 18367 \]
55101 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 73472 |
| Euler totient φ(n) | 36732 |
| Square | 3036120201 |
| Cube | 167293259195301 |
| Square root | 234.736022 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 171 |
| Scientific notation | 5.5101 × |
55101 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand one hundred and one |
| Binary (base 2) | 1101011100111101 |
| Octal (base 8) | 153475 |
| Hexadecimal (base 16) | D73D |
| Base 3 | 2210120210 |
| As time | 55101 seconds = 15 h 18 min 21 s |
Is 55101 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 | Yes (55101 ÷ 3 = 18367) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | 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 3) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55101 a prime number?
No. 55101 = 3 × 18367, so it is divisible by 3.
What are the factors of 55101?
1, 3, 18367, 55101.
What is 55101 in binary?
1101011100111101 (hexadecimal D73D, octal 153475).
What is the square root of 55101?
About 234.7360.
Is 55101 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 55101?
55101 is a semiprime: 3 × 18367, the product of two primes.