2521320424 has 16 divisors (see below), whose sum is σ = 5402829600. Its totient is φ = 1080565872.

The previous prime is 2521320419. The next prime is 2521320433. The reversal of 2521320424 is 4240231252.

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, 22511734 + ... + 22511845.

It is an arithmetic number, because the mean of its divisors is an integer number (337676850).

Almost surely, 2^2521320424 is an apocalyptic number.

It is an amenable number.

2521320424 is an abundant number, since it is smaller than the sum of its proper divisors (2881509176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521320424 is a wasteful number, since it uses less digits than its factorization.

2521320424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45023592 (or 45023588 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2521320424 is about 50212.7516075349. The cubic root of 2521320424 is about 1361.0560612276.

Adding to 2521320424 its reverse (4240231252), we get a palindrome (6761551676).

It can be divided in two parts, 2521320 and 424, that added together give a square (2521744 = 1588²).

The spelling of 2521320424 in words is "two billion, five hundred twenty-one million, three hundred twenty thousand, four hundred twenty-four".