ways: 50 = 12 + 72 = 52 + 52. It is also the sum of three squares, 50 = 32 + 42 + 52, and the sum of four squares, 50 = 62 + 32 + 22 + 12. It is a Harshad number. There is no solution to the equation (p(x) = 50, making 50 a nontotient. Nor is there a solution to the equation x - w(x) = 50, making 50 a