50643021 has 32 divisors (see below), whose sum is σ = 80212608. Its totient is φ = 28016640.

The previous prime is 50643001. The next prime is 50643023. The reversal of 50643021 is 12034605.

It is a happy number.

It is not a de Polignac number, because 50643021 - 2⁵ = 50642989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50643023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41005 + ... + 42221.

It is an arithmetic number, because the mean of its divisors is an integer number (2506644).

Almost surely, 2^50643021 is an apocalyptic number.

It is an amenable number.

50643021 is a deficient number, since it is larger than the sum of its proper divisors (29569587).

50643021 is a wasteful number, since it uses less digits than its factorization.

50643021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 50643021 is about 7116.3910094935. The cubic root of 50643021 is about 369.9757008634.

Adding to 50643021 its reverse (12034605), we get a palindrome (62677626).

The spelling of 50643021 in words is "fifty million, six hundred forty-three thousand, twenty-one".