2521375524 has 54 divisors (see below), whose sum is σ = 6533926854. Its totient is φ = 819332160.

The previous prime is 2521375469. The next prime is 2521375547. The reversal of 2521375524 is 4255731252.

2521375524 is a `hidden beast` number, since 2 + 52 + 13 + 75 + 524 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1537424100 + 983951424 = 39210^2 + 31368^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1928479 + ... + 1929785.

Almost surely, 2^2521375524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521375524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3266963427).

2521375524 is an abundant number, since it is smaller than the sum of its proper divisors (4012551330).

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

2521375524 is a wasteful number, since it uses less digits than its factorization.

2521375524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665 (or 1353 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 2521375524 is about 50213.3002699484. The cubic root of 2521375524 is about 1361.0659758266.

The spelling of 2521375524 in words is "two billion, five hundred twenty-one million, three hundred seventy-five thousand, five hundred twenty-four".