2502316921 has 12 divisors (see below), whose sum is σ = 2869001532. Its totient is φ = 2173956096.

The previous prime is 2502316841. The next prime is 2502316937. The reversal of 2502316921 is 1296132052.

2502316921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 63043600 + 2439273321 = 7940^2 + 49389^2 .

It is not a de Polignac number, because 2502316921 - 2¹⁵ = 2502284153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2502316991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432616 + ... + 438361.

It is an arithmetic number, because the mean of its divisors is an integer number (239083461).

Almost surely, 2^2502316921 is an apocalyptic number.

It is an amenable number.

2502316921 is a deficient number, since it is larger than the sum of its proper divisors (366684611).

2502316921 is a wasteful number, since it uses less digits than its factorization.

2502316921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871020 (or 871007 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2502316921 is about 50023.1638443631. The cubic root of 2502316921 is about 1357.6279515864.

Adding to 2502316921 its reverse (1296132052), we get a palindrome (3798448973).

The spelling of 2502316921 in words is "two billion, five hundred two million, three hundred sixteen thousand, nine hundred twenty-one".