2520538856 has 16 divisors (see below), whose sum is σ = 5155647840. Its totient is φ = 1145699440.

The previous prime is 2520538831. The next prime is 2520538859. The reversal of 2520538856 is 6588350252.

It is a super-2 number, since 2×2520538856² = 12706232249211577472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (2520538859) 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 3 ways as a sum of consecutive naturals, for example, 14321156 + ... + 14321331.

It is an arithmetic number, because the mean of its divisors is an integer number (322227990).

Almost surely, 2^2520538856 is an apocalyptic number.

It is an amenable number.

2520538856 is an abundant number, since it is smaller than the sum of its proper divisors (2635108984).

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

2520538856 is a wasteful number, since it uses less digits than its factorization.

2520538856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28642504 (or 28642500 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 44.

The square root of 2520538856 is about 50204.9684393885. The cubic root of 2520538856 is about 1360.9154116711.

The spelling of 2520538856 in words is "two billion, five hundred twenty million, five hundred thirty-eight thousand, eight hundred fifty-six".