52520521545 has 12 divisors (see below), whose sum is σ = 91035570756. Its totient is φ = 28010944800.

The previous prime is 52520521499. The next prime is 52520521553. The reversal of 52520521545 is 54512502525.

It can be written as a sum of positive squares in 2 ways, for example, as 5610159801 + 46910361744 = 74901^2 + 216588^2 .

It is not a de Polignac number, because 52520521545 - 2⁹ = 52520521033 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583561306 + ... + 583561395.

It is an arithmetic number, because the mean of its divisors is an integer number (7586297563).

Almost surely, 2^52520521545 is an apocalyptic number.

It is an amenable number.

52520521545 is a deficient number, since it is larger than the sum of its proper divisors (38515049211).

52520521545 is a wasteful number, since it uses less digits than its factorization.

52520521545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167122712 (or 1167122709 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 52520521545 in words is "fifty-two billion, five hundred twenty million, five hundred twenty-one thousand, five hundred forty-five".