2521037538 has 48 divisors (see below), whose sum is σ = 5575837176. Its totient is φ = 822931200.

The previous prime is 2521037531. The next prime is 2521037543. The reversal of 2521037538 is 8357301252.

It is a happy number.

2521037538 is a `hidden beast` number, since 252 + 1 + 0 + 375 + 38 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2495302209 + 25735329 = 49953^2 + 5073^2 .

It is not an unprimeable number, because it can be changed into a prime (2521037531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571156 + ... + 575552.

Almost surely, 2^2521037538 is an apocalyptic number.

2521037538 is an abundant number, since it is smaller than the sum of its proper divisors (3054799638).

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

2521037538 is a wasteful number, since it uses less digits than its factorization.

2521037538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059 (or 5056 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 2521037538 is about 50209.9346544088. The cubic root of 2521037538 is about 1361.0051569340.

The spelling of 2521037538 in words is "two billion, five hundred twenty-one million, thirty-seven thousand, five hundred thirty-eight".