50022740021 has 4 divisors (see below), whose sum is σ = 50024421612. Its totient is φ = 50021058432.

The previous prime is 50022740017. The next prime is 50022740063. The reversal of 50022740021 is 12004722005.

It is a happy number.

50022740021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8370420100 + 41652319921 = 91490^2 + 204089^2 .

It is a cyclic number.

It is not a de Polignac number, because 50022740021 - 2² = 50022740017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50022740081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795356 + ... + 855941.

It is an arithmetic number, because the mean of its divisors is an integer number (12506105403).

Almost surely, 2^50022740021 is an apocalyptic number.

It is an amenable number.

50022740021 is a deficient number, since it is larger than the sum of its proper divisors (1681591).

50022740021 is a wasteful number, since it uses less digits than its factorization.

50022740021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681590.

The product of its (nonzero) digits is 1120, while the sum is 23.

The spelling of 50022740021 in words is "fifty billion, twenty-two million, seven hundred forty thousand, twenty-one".