The number 5518
5518 is a composite number with 8 divisors. Its prime factorisation is 2 × 31 × 89. Divisors (8): 1, 2, 31, 62, 89, 178, 2759, 5518.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
5518 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
5518 is composite. Its prime factorisation is
- 3
The divisors add up to 8640; without 5518 itself that is 3122, so 5518 is deficient (3122 is less than 5518). Euler's totient φ(5518) = 2640 numbers up to 5518 share no factor with it.
- 4
The digits of 5518 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 160 steps to reach 1.
LaTeX source of the formulas on this page
\[ 5518 = 2 \times 31 \times 89 \]
5518 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 8640 |
| Euler totient φ(n) | 2640 |
| Square | 30448324 |
| Cube | 168013851832 |
| Square root | 74.283242 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 160 |
| Scientific notation | 5.518 × |
5518 in other forms
| Form | Value |
|---|---|
| In words | five thousand five hundred and eighteen |
| Binary (base 2) | 1010110001110 |
| Octal (base 8) | 12616 |
| Hexadecimal (base 16) | 158E |
| Base 3 | 21120101 |
| As time | 5518 seconds = 1 h 31 min 58 s |
Is 5518 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (5518 ÷ 2 = 2759) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 5518 a prime number?
No. 5518 = 2 × 31 × 89, so it is divisible by 2.
What are the factors of 5518?
1, 2, 31, 62, 89, 178, 2759, 5518.
What is 5518 in binary?
1010110001110 (hexadecimal 158E, octal 12616).
What is the square root of 5518?
About 74.2832.
Is 5518 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 5518?
It is a composite number with 8 divisors.