2521261524 has 12 divisors (see below), whose sum is σ = 5882943584. Its totient is φ = 840420504.

The previous prime is 2521261499. The next prime is 2521261543. The reversal of 2521261524 is 4251621252.

2521261524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2521261491 and 2521261500.

It is a congruent number.

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, 105052552 + ... + 105052575.

Almost surely, 2^2521261524 is an apocalyptic number.

It is an amenable number.

2521261524 is an abundant number, since it is smaller than the sum of its proper divisors (3361682060).

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

2521261524 is a wasteful number, since it uses less digits than its factorization.

2521261524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210105134 (or 210105132 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 2521261524 is about 50212.1650997047. The cubic root of 2521261524 is about 1361.0454627034.

Adding to 2521261524 its reverse (4251621252), we get a palindrome (6772882776).

It can be divided in two parts, 25212 and 61524, that added together give a triangular number (86736 = T₄₁₆).

The spelling of 2521261524 in words is "two billion, five hundred twenty-one million, two hundred sixty-one thousand, five hundred twenty-four".