2521080243 has 24 divisors (see below), whose sum is σ = 3993440256. Its totient is φ = 1519916400.

The previous prime is 2521080173. The next prime is 2521080257. The reversal of 2521080243 is 3420801252.

It is not a de Polignac number, because 2521080243 - 2¹⁰ = 2521079219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2521080043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47755 + ... + 85572.

It is an arithmetic number, because the mean of its divisors is an integer number (166393344).

Almost surely, 2^2521080243 is an apocalyptic number.

2521080243 is a deficient number, since it is larger than the sum of its proper divisors (1472360013).

2521080243 is a wasteful number, since it uses less digits than its factorization.

2521080243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133535 (or 133532 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2521080243 is about 50210.3599170530. The cubic root of 2521080243 is about 1361.0128417855.

Adding to 2521080243 its reverse (3420801252), we get a palindrome (5941881495).

The spelling of 2521080243 in words is "two billion, five hundred twenty-one million, eighty thousand, two hundred forty-three".