30520452521 has 8 divisors (see below), whose sum is σ = 33669843144. Its totient is φ = 27485585280.

The previous prime is 30520452499. The next prime is 30520452527. The reversal of 30520452521 is 12525402503.

It can be written as a sum of positive squares in 4 ways, for example, as 1763076121 + 28757376400 = 41989^2 + 169580^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30520452521 - 2³⁴ = 13340583337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30520452527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28630286 + ... + 28631351.

It is an arithmetic number, because the mean of its divisors is an integer number (4208730393).

Almost surely, 2^30520452521 is an apocalyptic number.

It is an amenable number.

30520452521 is a deficient number, since it is larger than the sum of its proper divisors (3149390623).

30520452521 is a wasteful number, since it uses less digits than its factorization.

30520452521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57261691.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 30520452521 in words is "thirty billion, five hundred twenty million, four hundred fifty-two thousand, five hundred twenty-one".