2578557560 has 32 divisors (see below), whose sum is σ = 5805326160. Its totient is φ = 1030788096.

The previous prime is 2578557559. The next prime is 2578557563. The reversal of 2578557560 is 657558752.

It is a happy number.

2578557560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2578557499 and 2578557508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578557563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48887 + ... + 86873.

Almost surely, 2^2578557560 is an apocalyptic number.

2578557560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578557560 is an abundant number, since it is smaller than the sum of its proper divisors (3226768600).

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

2578557560 is a wasteful number, since it uses less digits than its factorization.

2578557560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39695 (or 39691 counting only the distinct ones).

The product of its (nonzero) digits is 2940000, while the sum is 50.

The square root of 2578557560 is about 50779.4994067488. The cubic root of 2578557560 is about 1371.2783209444.

The spelling of 2578557560 in words is "two billion, five hundred seventy-eight million, five hundred fifty-seven thousand, five hundred sixty".