2556862 has 16 divisors (see below), whose sum is σ = 4781952. Its totient is φ = 996120.

The previous prime is 2556857. The next prime is 2556871. The reversal of 2556862 is 2686552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8148 + ... + 8455.

It is an arithmetic number, because the mean of its divisors is an integer number (298872).

2^2556862 is an apocalyptic number.

2556862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2556862 is a deficient number, since it is larger than the sum of its proper divisors (2225090).

2556862 is a wasteful number, since it uses less digits than its factorization.

2556862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16623.

The product of its digits is 28800, while the sum is 34.

The square root of 2556862 is about 1599.0190743077. The cubic root of 2556862 is about 136.7421580415.

It can be divided in two parts, 255 and 6862, that added together give a palindrome (7117).

The spelling of 2556862 in words is "two million, five hundred fifty-six thousand, eight hundred sixty-two".