The number 61522
61522 is a composite number with 8 divisors. Its prime factorisation is 2 × 19 × 1619. Divisors (8): 1, 2, 19, 38, 1619, 3238, 30761, 61522.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 61522: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
61522 is composite. Its prime factorisation is
- 3
The divisors add up to 97200; without 61522 itself that is 35678, so 61522 is deficient (35678 is less than 61522). Euler's totient φ(61522) = 29124 numbers up to 61522 share no factor with it.
- 4
The digits of 61522 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 117 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61522 = 2 \times 19 \times 1619 \]
61522 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 97200 |
| Euler totient φ(n) | 29124 |
| Square | 3784956484 |
| Cube | 232858092808648 |
| Square root | 248.036288 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 117 |
| Scientific notation | 6.1522 × |
61522 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand five hundred and twenty-two |
| Binary (base 2) | 1111000001010010 |
| Octal (base 8) | 170122 |
| Hexadecimal (base 16) | F052 |
| Base 3 | 10010101121 |
| As time | 61522 seconds = 17 h 5 min 22 s |
Is 61522 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (61522 ÷ 2 = 30761) | 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 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 2) | 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 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | 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 61522 a prime number?
No. 61522 = 2 × 19 × 1619, so it is divisible by 2.
What are the factors of 61522?
1, 2, 19, 38, 1619, 3238, 30761, 61522.
What is 61522 in binary?
1111000001010010 (hexadecimal F052, octal 170122).
What is the square root of 61522?
About 248.0363.
Is 61522 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 61522?
61522 is a happy number: repeatedly adding the squares of its digits reaches 1.