The number 55375
55375 is a composite number with 8 divisors. Its prime factorisation is Ć 443. Divisors (8): 1, 5, 25, 125, 443, 2215, 11075, 55375.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55375: a happy number: repeatedly adding the squares of its digits reaches 1; a Harshad number: divisible by its digit sum 25.
- 2
55375 is composite. Its prime factorisation is
- 3
The divisors add up to 69264; without 55375 itself that is 13889, so 55375 is deficient (13889 is less than 55375). Euler's totient Ļ(55375) = 44200 numbers up to 55375 share no factor with it.
- 4
The digits of 55375 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 47 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55375 = 5^{3} \times 443 \]55375 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 69264 |
| Euler totient Ļ(n) | 44200 |
| Square | 3066390625 |
| Cube | 169801380859375 |
| Square root | 235.318933 (= 5ā2215) |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 47 |
| Scientific notation | 5.5375 Ć |
55375 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand three hundred and seventy-five |
| Binary (base 2) | 1101100001001111 |
| Octal (base 8) | 154117 |
| Hexadecimal (base 16) | D84F |
| Base 3 | 2210221221 |
| As time | 55375 seconds = 15 h 22 min 55 s |
Is 55375 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 (55375 Ć· 5 = 11075) | 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 | No (remainder 5) | 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 7) | 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 1) | 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 55375 a prime number?
No. 55375 = Ć 443, so it is divisible by 5.
What are the factors of 55375?
1, 5, 25, 125, 443, 2215, 11075, 55375.
What is 55375 in binary?
1101100001001111 (hexadecimal D84F, octal 154117).
What is the square root of 55375?
About 235.3189, exactly 5ā2215.
Is 55375 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 55375?
55375 is a happy number: repeatedly adding the squares of its digits reaches 1; a Harshad number: divisible by its digit sum 25.