52637305721 has 48 divisors (see below), whose sum is σ = 72115706880. Its totient is φ = 37766373120.

The previous prime is 52637305697. The next prime is 52637305723. The reversal of 52637305721 is 12750373625.

52637305721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52637305721 - 2¹⁴ = 52637289337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52637305723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2856680 + ... + 2875046.

It is an arithmetic number, because the mean of its divisors is an integer number (1502410560).

Almost surely, 2^52637305721 is an apocalyptic number.

It is an amenable number.

52637305721 is a deficient number, since it is larger than the sum of its proper divisors (19478401159).

52637305721 is a wasteful number, since it uses less digits than its factorization.

52637305721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18814 (or 18807 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 52637305721 in words is "fifty-two billion, six hundred thirty-seven million, three hundred five thousand, seven hundred twenty-one".