52537682521 has 27 divisors (see below), whose sum is σ = 56799828189. Its totient is φ = 48585397248.

The previous prime is 52537682503. The next prime is 52537682557. The reversal of 52537682521 is 12528673525.

The square root of 52537682521 is 229211.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3075922521 + 49461760000 = 55461^2 + 222400^2 .

It is not a de Polignac number, because 52537682521 - 2²³ = 52529293913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52537682921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 377968870 + ... + 377969008.

Almost surely, 2^52537682521 is an apocalyptic number.

52537682521 is the 229211-st square number.

52537682521 is the 114606-th centered octagonal number.

It is an amenable number.

52537682521 is a deficient number, since it is larger than the sum of its proper divisors (4262145668).

52537682521 is an frugal number, since it uses more digits than its factorization.

52537682521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 253 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 46.

The spelling of 52537682521 in words is "fifty-two billion, five hundred thirty-seven million, six hundred eighty-two thousand, five hundred twenty-one".