52604512821 has 24 divisors (see below), whose sum is σ = 86845574400. Its totient is φ = 30057513696.

The previous prime is 52604512783. The next prime is 52604512837. The reversal of 52604512821 is 12821540625.

52604512821 is a `hidden beast` number, since 5 + 2 + 60 + 4 + 512 + 82 + 1 = 666.

It is not a de Polignac number, because 52604512821 - 2¹⁰ = 52604511797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52604512841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1264671 + ... + 1305603.

It is an arithmetic number, because the mean of its divisors is an integer number (3618565600).

Almost surely, 2^52604512821 is an apocalyptic number.

It is an amenable number.

52604512821 is a deficient number, since it is larger than the sum of its proper divisors (34241061579).

52604512821 is a wasteful number, since it uses less digits than its factorization.

52604512821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61345 (or 61342 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 52604512821 in words is "fifty-two billion, six hundred four million, five hundred twelve thousand, eight hundred twenty-one".