227

Number
$227$ (two hundred and twenty-seven) is:


 * The $49$th prime number


 * The $5$th Stern number after $1$, $3$, $17$, $137$


 * The $5$th Stern prime after $1$, $3$, $17$, $137$


 * The $11$th safe prime after $5$, $7$, $11$, $23$, $47$, $59$, $83$, $107$, $167$, $179$:
 * $227 = 2 \times 113 + 1$


 * The smaller of the $16$th pair of twin primes, with $229$