47 (the 15th prime)

 
Next prime53
Previous prime43
Octal(57)8
Hexadecimal(2F)16
Prime gap6
10th Sexy prime (the small number)The big number is 53 .
8th Prime of the Form 4n+3 
3rd Euler prime number 
4th Double factorial prime6!! - 1
5th Safe prime 
10th Left-truncatable prime