The number 3751
3751 is a composite number with 6 divisors. Its prime factorisation is Ć 31. Divisors (6): 1, 11, 31, 121, 341, 3751.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
3751 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
3751 is composite. Its prime factorisation is
- 3
The divisors add up to 4256; without 3751 itself that is 505, so 3751 is deficient (505 is less than 3751). Euler's totient Ļ(3751) = 3300 numbers up to 3751 share no factor with it.
- 4
The digits of 3751 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 61 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3751 = 11^{2} \times 31 \]3751 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 4256 |
| Euler totient Ļ(n) | 3300 |
| Square | 14070001 |
| Cube | 52776573751 |
| Square root | 61.245408 (= 11ā31) |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 61 |
| Scientific notation | 3.751 Ć |
3751 in other forms
| Form | Value |
|---|---|
| In words | three thousand seven hundred and fifty-one |
| Roman numerals | MMMDCCLI |
| Binary (base 2) | 111010100111 |
| Octal (base 8) | 7247 |
| Hexadecimal (base 16) | EA7 |
| Base 3 | 12010221 |
| As time | 3751 seconds = 1 h 2 min 31 s |
Is 3751 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 | No (remainder 1) | 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 6) | 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 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (3751 Ć· 11 = 341) | 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 3751 a prime number?
No. 3751 = Ć 31, so it is divisible by 11.
What are the factors of 3751?
1, 11, 31, 121, 341, 3751.
What is 3751 in binary?
111010100111 (hexadecimal EA7, octal 7247).
What is the square root of 3751?
About 61.2454, exactly 11ā31.
What is 3751 in Roman numerals?
MMMDCCLI.
Is 3751 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 3751?
It is a composite number with 6 divisors.