2556581598 has 48 divisors (see below), whose sum is σ = 5693440896. Its totient is φ = 828651600.

The previous prime is 2556581543. The next prime is 2556581627. The reversal of 2556581598 is 8951856552.

2556581598 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 581 + 59 + 8 = 666.

2556581598 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 2×2556581598² = 13072218934464467208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168423 + ... + 182973.

It is an arithmetic number, because the mean of its divisors is an integer number (118613352).

Almost surely, 2^2556581598 is an apocalyptic number.

2556581598 is an abundant number, since it is smaller than the sum of its proper divisors (3136859298).

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

2556581598 is a wasteful number, since it uses less digits than its factorization.

2556581598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14829 (or 14826 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 54.

The square root of 2556581598 is about 50562.6502272181. The cubic root of 2556581598 is about 1367.3715918273.

The spelling of 2556581598 in words is "two billion, five hundred fifty-six million, five hundred eighty-one thousand, five hundred ninety-eight".