2813135521 has 9 divisors (see below), whose sum is σ = 3272854899. Its totient is φ = 2410940784.

The previous prime is 2813135483. The next prime is 2813135531. The reversal of 2813135521 is 1255313182.

The square root of 2813135521 is 53039.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 18533025 + 2794602496 = 4305^2 + 52864^2 .

It is not a de Polignac number, because 2813135521 - 2¹³ = 2813127329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2813135531) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 367485 + ... + 375061.

Almost surely, 2^2813135521 is an apocalyptic number.

2813135521 is the 53039-th square number.

2813135521 is the 26520-th centered octagonal number.

It is an amenable number.

2813135521 is a deficient number, since it is larger than the sum of its proper divisors (459719378).

2813135521 is an frugal number, since it uses more digits than its factorization.

2813135521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168 (or 7584 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The cubic root of 2813135521 is about 1411.6603549870.

The spelling of 2813135521 in words is "two billion, eight hundred thirteen million, one hundred thirty-five thousand, five hundred twenty-one".