2557855758 has 16 divisors (see below), whose sum is σ = 5163523200. Its totient is φ = 844649976.

The previous prime is 2557855757. The next prime is 2557855771. The reversal of 2557855758 is 8575587552.

It is a junction number, because it is equal to n+sod(n) for n = 2557855698 and 2557855707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557855757) 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, 1991458 + ... + 1992741.

It is an arithmetic number, because the mean of its divisors is an integer number (322720200).

Almost surely, 2^2557855758 is an apocalyptic number.

2557855758 is an abundant number, since it is smaller than the sum of its proper divisors (2605667442).

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

2557855758 is a wasteful number, since it uses less digits than its factorization.

2557855758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984311.

The product of its digits is 19600000, while the sum is 57.

The square root of 2557855758 is about 50575.2484719551. The cubic root of 2557855758 is about 1367.5987129217.

The spelling of 2557855758 in words is "two billion, five hundred fifty-seven million, eight hundred fifty-five thousand, seven hundred fifty-eight".