50221312 has 18 divisors (see below), whose sum is σ = 100246958. Its totient is φ = 25110528.

The previous prime is 50221231. The next prime is 50221319. The reversal of 50221312 is 21312205.

It can be written as a sum of positive squares in only one way, i.e., 30294016 + 19927296 = 5504^2 + 4464^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (50221319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97833 + ... + 98344.

Almost surely, 2^50221312 is an apocalyptic number.

It is an amenable number.

50221312 is a deficient number, since it is larger than the sum of its proper divisors (50025646).

50221312 is an equidigital number, since it uses as much as digits as its factorization.

50221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196193 (or 196179 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 50221312 is about 7086.6996549875. The cubic root of 50221312 is about 368.9458967932.

Adding to 50221312 its reverse (21312205), we get a palindrome (71533517).

The spelling of 50221312 in words is "fifty million, two hundred twenty-one thousand, three hundred twelve".