The number 53722
53722 is a composite number with 4 divisors. Its prime factorisation is 2 × 26861. Divisors (4): 1, 2, 26861, 53722.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 53722: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 26861, the product of two primes.
- 2
53722 is composite. Its prime factorisation is
- 3
The divisors add up to 80586; without 53722 itself that is 26864, so 53722 is deficient (26864 is less than 53722). Euler's totient φ(53722) = 26860 numbers up to 53722 share no factor with it.
- 4
The digits of 53722 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 140 steps to reach 1.
LaTeX source of the formulas on this page
\[ 53722 = 2 \times 26861 \]
53722 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 80586 |
| Euler totient φ(n) | 26860 |
| Square | 2886053284 |
| Cube | 155044554523048 |
| Square root | 231.780068 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 140 |
| Scientific notation | 5.3722 × |
53722 in other forms
| Form | Value |
|---|---|
| In words | fifty-three thousand seven hundred and twenty-two |
| Binary (base 2) | 1101000111011010 |
| Octal (base 8) | 150732 |
| Hexadecimal (base 16) | D1DA |
| Base 3 | 2201200201 |
| As time | 53722 seconds = 14 h 55 min 22 s |
Is 53722 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (53722 ÷ 2 = 26861) | 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 2) | 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 4) | 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 2) | 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 2) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 53722 a prime number?
No. 53722 = 2 × 26861, so it is divisible by 2.
What are the factors of 53722?
1, 2, 26861, 53722.
What is 53722 in binary?
1101000111011010 (hexadecimal D1DA, octal 150732).
What is the square root of 53722?
About 231.7801.
Is 53722 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 53722?
53722 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 26861, the product of two primes.