2581386056 has 16 divisors (see below), whose sum is σ = 5094841200. Its totient is φ = 1222761744.

The previous prime is 2581386043. The next prime is 2581386083. The reversal of 2581386056 is 6506831852.

2581386056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2581386056² = 13327107940222470272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2581385998 and 2581386016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8491250 + ... + 8491553.

It is an arithmetic number, because the mean of its divisors is an integer number (318427575).

Almost surely, 2^2581386056 is an apocalyptic number.

It is an amenable number.

2581386056 is a deficient number, since it is larger than the sum of its proper divisors (2513455144).

2581386056 is a wasteful number, since it uses less digits than its factorization.

2581386056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16982828 (or 16982824 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 2581386056 is about 50807.3425402274. The cubic root of 2581386056 is about 1371.7795362965.

The spelling of 2581386056 in words is "two billion, five hundred eighty-one million, three hundred eighty-six thousand, fifty-six".