50522864221 has 4 divisors (see below), whose sum is σ = 51755129244. Its totient is φ = 49290599200.

The previous prime is 50522864149. The next prime is 50522864237. The reversal of 50522864221 is 12246822505.

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 28503568900 + 22019295321 = 168830^2 + 148389^2 .

It is a cyclic number.

It is not a de Polignac number, because 50522864221 - 2²⁵ = 50489309789 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 (50522864251) 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, 616132450 + ... + 616132531.

It is an arithmetic number, because the mean of its divisors is an integer number (12938782311).

Almost surely, 2^50522864221 is an apocalyptic number.

It is an amenable number.

50522864221 is a deficient number, since it is larger than the sum of its proper divisors (1232265023).

50522864221 is a wasteful number, since it uses less digits than its factorization.

50522864221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232265022.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 50522864221 in words is "fifty billion, five hundred twenty-two million, eight hundred sixty-four thousand, two hundred twenty-one".