2556086 has 16 divisors (see below), whose sum is σ = 4372704. Its totient is φ = 1110144.

The previous prime is 2556079. The next prime is 2556091. The reversal of 2556086 is 6806552.

It is a happy number.

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, 2450 + ... + 3333.

It is an arithmetic number, because the mean of its divisors is an integer number (273294).

2^2556086 is an apocalyptic number.

2556086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2556086 is a deficient number, since it is larger than the sum of its proper divisors (1816618).

2556086 is a wasteful number, since it uses less digits than its factorization.

2556086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2556086 is about 1598.7764071314. The cubic root of 2556086 is about 136.7283230293.

The spelling of 2556086 in words is "two million, five hundred fifty-six thousand, eighty-six".