2520581056 has 56 divisors (see below), whose sum is σ = 5721217920. Its totient is φ = 1079323392.

The previous prime is 2520581029. The next prime is 2520581057. The reversal of 2520581056 is 6501850252.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520581057) 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, 885171 + ... + 888013.

Almost surely, 2^2520581056 is an apocalyptic number.

It is an amenable number.

2520581056 is an abundant number, since it is smaller than the sum of its proper divisors (3200636864).

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

2520581056 is a wasteful number, since it uses less digits than its factorization.

2520581056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841 (or 4831 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 2520581056 is about 50205.3887147585. The cubic root of 2520581056 is about 1360.9230066489.

The spelling of 2520581056 in words is "two billion, five hundred twenty million, five hundred eighty-one thousand, fifty-six".