2555656 has 16 divisors (see below), whose sum is σ = 4871340. Its totient is φ = 1256640.

The previous prime is 2555647. The next prime is 2555669. The reversal of 2555656 is 6565552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2528100 + 27556 = 1590^2 + 166^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131 + ... + 3106.

2^2555656 is an apocalyptic number.

It is an amenable number.

2555656 is a deficient number, since it is larger than the sum of its proper divisors (2315684).

2555656 is a wasteful number, since it uses less digits than its factorization.

2555656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304 (or 5300 counting only the distinct ones).

The product of its digits is 45000, while the sum is 34.

The square root of 2555656 is about 1598.6419236339. The cubic root of 2555656 is about 136.7206555152.

The spelling of 2555656 in words is "two million, five hundred fifty-five thousand, six hundred fifty-six".