50321921 has 16 divisors (see below), whose sum is σ = 57934800. Its totient is φ = 43296768.

The previous prime is 50321917. The next prime is 50321923. The reversal of 50321921 is 12912305.

It can be written as a sum of positive squares in 8 ways, for example, as 3591025 + 46730896 = 1895^2 + 6836^2 .

It is a cyclic number.

It is not a de Polignac number, because 50321921 - 2² = 50321917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50321923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23045 + ... + 25133.

It is an arithmetic number, because the mean of its divisors is an integer number (3620925).

Almost surely, 2^50321921 is an apocalyptic number.

It is an amenable number.

50321921 is a deficient number, since it is larger than the sum of its proper divisors (7612879).

50321921 is a wasteful number, since it uses less digits than its factorization.

50321921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 50321921 is about 7093.7945417104. The cubic root of 50321921 is about 369.1921038093.

The spelling of 50321921 in words is "fifty million, three hundred twenty-one thousand, nine hundred twenty-one".