The number 55622
55622 is a composite number with 16 divisors. Its prime factorisation is 2 × 7 × 29 × 137. Divisors (16): 1, 2, 7, 14, 29, 58, 137, 203, 274, 406, 959, 1918, 3973, 7946, 27811, 55622.
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How to work it out
- 1
What is special about 55622: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
55622 is composite. Its prime factorisation is
- 3
The divisors add up to 99360; without 55622 itself that is 43738, so 55622 is deficient (43738 is less than 55622). Euler's totient φ(55622) = 22848 numbers up to 55622 share no factor with it.
- 4
The digits of 55622 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 91 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55622 = 2 \times 7 \times 29 \times 137 \]
55622 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 99360 |
| Euler totient φ(n) | 22848 |
| Square | 3093806884 |
| Cube | 172083726501848 |
| Square root | 235.843168 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 91 |
| Scientific notation | 5.5622 × |
55622 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand six hundred and twenty-two |
| Binary (base 2) | 1101100101000110 |
| Octal (base 8) | 154506 |
| Hexadecimal (base 16) | D946 |
| Base 3 | 2211022002 |
| As time | 55622 seconds = 15 h 27 min 2 s |
Is 55622 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55622 ÷ 2 = 27811) | 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 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 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (55622 ÷ 7 = 7946) | 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 2) | 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 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55622 a prime number?
No. 55622 = 2 × 7 × 29 × 137, so it is divisible by 2.
What are the factors of 55622?
1, 2, 7, 14, 29, 58, 137, 203, 274, 406, 959, 1918, 3973, 7946, 27811, 55622.
What is 55622 in binary?
1101100101000110 (hexadecimal D946, octal 154506).
What is the square root of 55622?
About 235.8432.
Is 55622 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 55622?
55622 is a happy number: repeatedly adding the squares of its digits reaches 1.