2521979530 has 32 divisors (see below), whose sum is σ = 5293958400. Its totient is φ = 864677520.

The previous prime is 2521979527. The next prime is 2521979531. The reversal of 2521979530 is 359791252.

It is not an unprimeable number, because it can be changed into a prime (2521979531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364206 + ... + 371065.

It is an arithmetic number, because the mean of its divisors is an integer number (165436200).

Almost surely, 2^2521979530 is an apocalyptic number.

2521979530 is an abundant number, since it is smaller than the sum of its proper divisors (2771978870).

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

2521979530 is an equidigital number, since it uses as much as digits as its factorization.

2521979530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735299 (or 735285 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 2521979530 is about 50219.3143123241. The cubic root of 2521979530 is about 1361.1746501555.

The spelling of 2521979530 in words is "two billion, five hundred twenty-one million, nine hundred seventy-nine thousand, five hundred thirty".