2521240356 has 24 divisors (see below), whose sum is σ = 5921857984. Its totient is φ = 834847200.

The previous prime is 2521240303. The next prime is 2521240357. The reversal of 2521240356 is 6530421252.

It is not an unprimeable number, because it can be changed into a prime (2521240357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693895 + ... + 697518.

Almost surely, 2^2521240356 is an apocalyptic number.

It is an amenable number.

2521240356 is an abundant number, since it is smaller than the sum of its proper divisors (3400617628).

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

2521240356 is a wasteful number, since it uses less digits than its factorization.

2521240356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391571 (or 1391569 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2521240356 is about 50211.9543136891. The cubic root of 2521240356 is about 1361.0416536723.

The spelling of 2521240356 in words is "two billion, five hundred twenty-one million, two hundred forty thousand, three hundred fifty-six".