2556655 has 8 divisors (see below), whose sum is σ = 3087792. Its totient is φ = 2032128.

The previous prime is 2556641. The next prime is 2556661. The reversal of 2556655 is 5566552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2556655 - 2⁹ = 2556143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2556655.

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, 754 + ... + 2383.

It is an arithmetic number, because the mean of its divisors is an integer number (385974).

2^2556655 is an apocalyptic number.

2556655 is a deficient number, since it is larger than the sum of its proper divisors (531137).

2556655 is a wasteful number, since it uses less digits than its factorization.

2556655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

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

The square root of 2556655 is about 1598.9543458148. The cubic root of 2556655 is about 136.7384677901.

The spelling of 2556655 in words is "two million, five hundred fifty-six thousand, six hundred fifty-five".