227 is the natural number between 226 and 228. It is also a prime number.
227 is a prime number, and a twin prime with 229 (thus 227 is a Chen prime). 223 plus 4 is 227, so they are cousin primes. 227 plus 6 is 233, making 227 and 233 sexy primes; furthermore, 227, 233, and 239 form a sexy prime triplet.
Since (227 - 1)/2 is 113, also a prime, 227 is a safe prime.
It is also a regular prime. 227 is an Eisenstein prime with no imaginary part, and also a Gaussian prime. 227 is a Stern prime since it is not of the form .
It can be written as the sum of the sum and the product of the first four primes:
In popular culture
- ^ http://primes.utm.edu/curios/page.php/227.html