521325054045 has 64 divisors (see below), whose sum is σ = 945622425600. Its totient is φ = 272441413440.

The previous prime is 521325054017. The next prime is 521325054091. The reversal of 521325054045 is 540450523125.

521325054045 is a `hidden beast` number, since 5 + 21 + 3 + 2 + 50 + 540 + 45 = 666.

It is not a de Polignac number, because 521325054045 - 2¹⁰ = 521325053021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1395516 + ... + 1729194.

It is an arithmetic number, because the mean of its divisors is an integer number (14775350400).

Almost surely, 2^521325054045 is an apocalyptic number.

It is an amenable number.

521325054045 is a deficient number, since it is larger than the sum of its proper divisors (424297371555).

521325054045 is a wasteful number, since it uses less digits than its factorization.

521325054045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333927 (or 333921 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 521325054045 in words is "five hundred twenty-one billion, three hundred twenty-five million, fifty-four thousand, forty-five".