50397021 has 6 divisors (see below), whose sum is σ = 72795710. Its totient is φ = 33598008.

The previous prime is 50397001. The next prime is 50397037. The reversal of 50397021 is 12079305.

It can be written as a sum of positive squares in only one way, i.e., 46049796 + 4347225 = 6786^2 + 2085^2 .

It is not a de Polignac number, because 50397021 - 2⁹ = 50396509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50397001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2799826 + ... + 2799843.

Almost surely, 2^50397021 is an apocalyptic number.

It is an amenable number.

50397021 is a deficient number, since it is larger than the sum of its proper divisors (22398689).

50397021 is a wasteful number, since it uses less digits than its factorization.

50397021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599675 (or 5599672 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 50397021 is about 7099.0859270754. The cubic root of 50397021 is about 369.3756722226.

The spelling of 50397021 in words is "fifty million, three hundred ninety-seven thousand, twenty-one".