2556222 has 32 divisors (see below), whose sum is σ = 5702400. Its totient is φ = 759168.

The previous prime is 2556217. The next prime is 2556233. The reversal of 2556222 is 2226552.

It is a d-powerful number, because it can be written as 2³ + 5⁷ + 5⁹ + 6² + 2⁷ + 2⁹ + 2¹⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 2556192 and 2556201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1279 + ... + 2597.

It is an arithmetic number, because the mean of its divisors is an integer number (178200).

2^2556222 is an apocalyptic number.

2556222 is an abundant number, since it is smaller than the sum of its proper divisors (3146178).

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

2556222 is a wasteful number, since it uses less digits than its factorization.

2556222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360.

The product of its digits is 2400, while the sum is 24.

The square root of 2556222 is about 1598.8189390922. The cubic root of 2556222 is about 136.7307479245.

The spelling of 2556222 in words is "two million, five hundred fifty-six thousand, two hundred twenty-two".