The number 55229
55229 is the 5612th prime number. Its only divisors are 1 and 55229.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 55229: the 5612th prime number; a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
55229 is prime, so its only factors are 1 and 55229. It is the 5612th prime; the next prime is 55243 and the one before is 55219.
- 3
The divisors add up to 55230; without 55229 itself that is 1, so 55229 is deficient (1 is less than 55229). Euler's totient φ(55229) = 55228 numbers up to 55229 share no factor with it.
- 4
The digits of 55229 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 65 steps to reach 1.
55229 at a glance
| Property | Value |
|---|---|
| Type | prime |
| Number of divisors | 2 |
| Sum of divisors | 55230 |
| Euler totient φ(n) | 55228 |
| Square | 3050242441 |
| Cube | 168461839773989 |
| Square root | 235.008510 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 65 |
| Scientific notation | 5.5229 × |
55229 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand two hundred and twenty-nine |
| Binary (base 2) | 1101011110111101 |
| Octal (base 8) | 153675 |
| Hexadecimal (base 16) | D7BD |
| Base 3 | 2210202112 |
| As time | 55229 seconds = 15 h 20 min 29 s |
Is 55229 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 4) | 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 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 5) | 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 9) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55229 a prime number?
Yes. 55229 is divisible only by 1 and itself.
What are the factors of 55229?
1, 55229.
What is 55229 in binary?
1101011110111101 (hexadecimal D7BD, octal 153675).
What is the square root of 55229?
About 235.0085.
Is 55229 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 55229?
55229 is the 5612th prime number; a happy number: repeatedly adding the squares of its digits reaches 1.