The number 22061
22061 is a composite number with 4 divisors. Its prime factorisation is 13 × 1697. Divisors (4): 1, 13, 1697, 22061.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 22061: a semiprime: 13 × 1697, the product of two primes.
- 2
22061 is composite. Its prime factorisation is
- 3
The divisors add up to 23772; without 22061 itself that is 1711, so 22061 is deficient (1711 is less than 22061). Euler's totient φ(22061) = 20352 numbers up to 22061 share no factor with it.
- 4
The digits of 22061 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 162 steps to reach 1.
LaTeX source of the formulas on this page
\[ 22061 = 13 \times 1697 \]
22061 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 23772 |
| Euler totient φ(n) | 20352 |
| Square | 486687721 |
| Cube | 10736817812981 |
| Square root | 148.529458 |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 162 |
| Scientific notation | 2.2061 × |
22061 in other forms
| Form | Value |
|---|---|
| In words | twenty-two thousand and sixty-one |
| Binary (base 2) | 101011000101101 |
| Octal (base 8) | 53055 |
| Hexadecimal (base 16) | 562D |
| Base 3 | 1010021002 |
| As time | 22061 seconds = 6 h 7 min 41 s |
Is 22061 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 1) | 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 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 2) | 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 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 22061 a prime number?
No. 22061 = 13 × 1697, so it is divisible by 13.
What are the factors of 22061?
1, 13, 1697, 22061.
What is 22061 in binary?
101011000101101 (hexadecimal 562D, octal 53055).
What is the square root of 22061?
About 148.5295.
Is 22061 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 22061?
22061 is a semiprime: 13 × 1697, the product of two primes.