2521045065 has 128 divisors (see below), whose sum is σ = 5372116992. Its totient is φ = 978405120.

The previous prime is 2521045049. The next prime is 2521045097. The reversal of 2521045065 is 5605401252.

It is not a de Polignac number, because 2521045065 - 2⁴ = 2521045049 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1141192 + ... + 1143398.

It is an arithmetic number, because the mean of its divisors is an integer number (41969664).

Almost surely, 2^2521045065 is an apocalyptic number.

It is an amenable number.

2521045065 is an abundant number, since it is smaller than the sum of its proper divisors (2851071927).

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

2521045065 is a wasteful number, since it uses less digits than its factorization.

2521045065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2521045065 is about 50210.0096096386. The cubic root of 2521045065 is about 1361.0065114392.

The spelling of 2521045065 in words is "two billion, five hundred twenty-one million, forty-five thousand, sixty-five".