The number 3755
3755 is a composite number with 4 divisors. Its prime factorisation is 5 × 751. Divisors (4): 1, 5, 751, 3755.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 3755: a semiprime: 5 × 751, the product of two primes.
- 2
3755 is composite. Its prime factorisation is
- 3
The divisors add up to 4512; without 3755 itself that is 757, so 3755 is deficient (757 is less than 3755). Euler's totient φ(3755) = 3000 numbers up to 3755 share no factor with it.
- 4
The digits of 3755 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 61 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3755 = 5 \times 751 \]
3755 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 4512 |
| Euler totient φ(n) | 3000 |
| Square | 14100025 |
| Cube | 52945593875 |
| Square root | 61.278055 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 61 |
| Scientific notation | 3.755 × |
3755 in other forms
| Form | Value |
|---|---|
| In words | three thousand seven hundred and fifty-five |
| Roman numerals | MMMDCCLV |
| Binary (base 2) | 111010101011 |
| Octal (base 8) | 7253 |
| Hexadecimal (base 16) | EAB |
| Base 3 | 12011002 |
| As time | 3755 seconds = 1 h 2 min 35 s |
Is 3755 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 2) | 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 (3755 ÷ 5 = 751) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 2) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 3755 a prime number?
No. 3755 = 5 × 751, so it is divisible by 5.
What are the factors of 3755?
1, 5, 751, 3755.
What is 3755 in binary?
111010101011 (hexadecimal EAB, octal 7253).
What is the square root of 3755?
About 61.2781.
What is 3755 in Roman numerals?
MMMDCCLV.
Is 3755 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 3755?
3755 is a semiprime: 5 × 751, the product of two primes.