2521921312 has 24 divisors (see below), whose sum is σ = 4966825500. Its totient is φ = 1260505344.

The previous prime is 2521921249. The next prime is 2521921343. The reversal of 2521921312 is 2131291252.

It can be written as a sum of positive squares in 2 ways, for example, as 2381830416 + 140090896 = 48804^2 + 11836^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86814 + ... + 112162.

Almost surely, 2^2521921312 is an apocalyptic number.

It is an amenable number.

2521921312 is a deficient number, since it is larger than the sum of its proper divisors (2444904188).

2521921312 is a wasteful number, since it uses less digits than its factorization.

2521921312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28468 (or 28460 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 2521921312 is about 50218.7346714351. The cubic root of 2521921312 is about 1361.1641761774.

The spelling of 2521921312 in words is "two billion, five hundred twenty-one million, nine hundred twenty-one thousand, three hundred twelve".