The number 5423
5423 is a composite number with 8 divisors. Its prime factorisation is 11 × 17 × 29. Divisors (8): 1, 11, 17, 29, 187, 319, 493, 5423.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
5423 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
5423 is composite. Its prime factorisation is
- 3
The divisors add up to 6480; without 5423 itself that is 1057, so 5423 is deficient (1057 is less than 5423). Euler's totient φ(5423) = 4480 numbers up to 5423 share no factor with it.
- 4
The digits of 5423 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 67 steps to reach 1.
LaTeX source of the formulas on this page
\[ 5423 = 11 \times 17 \times 29 \]
5423 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 6480 |
| Euler totient φ(n) | 4480 |
| Square | 29408929 |
| Cube | 159484621967 |
| Square root | 73.641021 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 67 |
| Scientific notation | 5.423 × |
5423 in other forms
| Form | Value |
|---|---|
| In words | five thousand four hundred and twenty-three |
| Binary (base 2) | 1010100101111 |
| Octal (base 8) | 12457 |
| Hexadecimal (base 16) | 152F |
| Base 3 | 21102212 |
| As time | 5423 seconds = 1 h 30 min 23 s |
Is 5423 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 3) | 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 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 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (5423 ÷ 11 = 493) | 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 5423 a prime number?
No. 5423 = 11 × 17 × 29, so it is divisible by 11.
What are the factors of 5423?
1, 11, 17, 29, 187, 319, 493, 5423.
What is 5423 in binary?
1010100101111 (hexadecimal 152F, octal 12457).
What is the square root of 5423?
About 73.6410.
Is 5423 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 5423?
It is a composite number with 8 divisors.