58827
50 in base 64 = y
y in ascii = 121
121 converted from base 3 to base 16 = 10
10 = 3*3+1
3*3+1 in ascii = 051(+)042(+)051(+)043(+)049 = 236
236 in base 26 = 92
92 in base 9 = 112
112 in base 36 = 34
34 in base 64 = i
i is the 9th letter of the alphabet
therefore, 50 = 9
my prediction was correct now give me all your money and fancy hats
y in ascii = 121
121 converted from base 3 to base 16 = 10
10 = 3*3+1
3*3+1 in ascii = 051(+)042(+)051(+)043(+)049 = 236
236 in base 26 = 92
92 in base 9 = 112
112 in base 36 = 34
34 in base 64 = i
i is the 9th letter of the alphabet
therefore, 50 = 9
my prediction was correct now give me all your money and fancy hats