2556788 has 12 divisors (see below), whose sum is σ = 4818660. Its totient is φ = 1180032.

The previous prime is 2556761. The next prime is 2556791. The reversal of 2556788 is 8876552.

It can be written as a sum of positive squares in 2 ways, for example, as 1024144 + 1532644 = 1012^2 + 1238^2 .

It is a plaindrome in base 10.

It is a congruent number.

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, 24533 + ... + 24636.

It is an arithmetic number, because the mean of its divisors is an integer number (401555).

2^2556788 is an apocalyptic number.

It is an amenable number.

2556788 is a deficient number, since it is larger than the sum of its proper divisors (2261872).

2556788 is a wasteful number, since it uses less digits than its factorization.

2556788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49186 (or 49184 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 2556788 is about 1598.9959349542. The cubic root of 2556788 is about 136.7408388441.

The spelling of 2556788 in words is "two million, five hundred fifty-six thousand, seven hundred eighty-eight".