2521215304 has 32 divisors (see below), whose sum is σ = 4801497120. Its totient is φ = 1240926336.

The previous prime is 2521215299. The next prime is 2521215329. The reversal of 2521215304 is 4035121252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181204 + ... + 194620.

It is an arithmetic number, because the mean of its divisors is an integer number (150046785).

Almost surely, 2^2521215304 is an apocalyptic number.

It is an amenable number.

2521215304 is a deficient number, since it is larger than the sum of its proper divisors (2280281816).

2521215304 is a wasteful number, since it uses less digits than its factorization.

2521215304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13789 (or 13785 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2521215304 is about 50211.7048505625. The cubic root of 2521215304 is about 1361.0371457154.

Adding to 2521215304 its reverse (4035121252), we get a palindrome (6556336556).

The spelling of 2521215304 in words is "two billion, five hundred twenty-one million, two hundred fifteen thousand, three hundred four".