The number 3551
3551 is a composite number with 4 divisors. Its prime factorisation is 53 × 67. Divisors (4): 1, 53, 67, 3551.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 3551: a semiprime: 53 × 67, the product of two primes.
- 2
3551 is composite. Its prime factorisation is
- 3
The divisors add up to 3672; without 3551 itself that is 121, so 3551 is deficient (121 is less than 3551). Euler's totient φ(3551) = 3432 numbers up to 3551 share no factor with it.
- 4
The digits of 3551 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 87 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3551 = 53 \times 67 \]
3551 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 3672 |
| Euler totient φ(n) | 3432 |
| Square | 12609601 |
| Cube | 44776693151 |
| Square root | 59.590268 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 87 |
| Scientific notation | 3.551 × |
3551 in other forms
| Form | Value |
|---|---|
| In words | three thousand five hundred and fifty-one |
| Roman numerals | MMMDLI |
| Binary (base 2) | 110111011111 |
| Octal (base 8) | 6737 |
| Hexadecimal (base 16) | DDF |
| Base 3 | 11212112 |
| As time | 3551 seconds = 59 min 11 s |
Is 3551 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 | No (remainder 1) | 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 2) | 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 5) | 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 9) | 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 3551 a prime number?
No. 3551 = 53 × 67, so it is divisible by 53.
What are the factors of 3551?
1, 53, 67, 3551.
What is 3551 in binary?
110111011111 (hexadecimal DDF, octal 6737).
What is the square root of 3551?
About 59.5903.
What is 3551 in Roman numerals?
MMMDLI.
Is 3551 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 3551?
3551 is a semiprime: 53 × 67, the product of two primes.