52502541421 has 12 divisors (see below), whose sum is σ = 57728811196. Its totient is φ = 47713533120.

The previous prime is 52502541391. The next prime is 52502541449. The reversal of 52502541421 is 12414520525.

52502541421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 45309805321 + 7192736100 = 212861^2 + 84810^2 .

It is not a de Polignac number, because 52502541421 - 2⁵ = 52502541389 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 (52502541451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296041 + ... + 438913.

Almost surely, 2^52502541421 is an apocalyptic number.

It is an amenable number.

52502541421 is a deficient number, since it is larger than the sum of its proper divisors (5226269775).

52502541421 is a wasteful number, since it uses less digits than its factorization.

52502541421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145932 (or 145921 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 52502541421 in words is "fifty-two billion, five hundred two million, five hundred forty-one thousand, four hundred twenty-one".