2556006 has 16 divisors (see below), whose sum is σ = 5231424. Its totient is φ = 832104.

The previous prime is 2555989. The next prime is 2556011. The reversal of 2556006 is 6006552.

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, 4696 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (326964).

2^2556006 is an apocalyptic number.

2556006 is an abundant number, since it is smaller than the sum of its proper divisors (2675418).

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

2556006 is a wasteful number, since it uses less digits than its factorization.

2556006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2556006 is about 1598.7513878024. The cubic root of 2556006 is about 136.7268965801.

The spelling of 2556006 in words is "two million, five hundred fifty-six thousand, six".