2805506 has 12 divisors (see below), whose sum is σ = 4626006. Its totient is φ = 1275120.

The previous prime is 2805497. The next prime is 2805511. The reversal of 2805506 is 6055082.

It can be written as a sum of positive squares in only one way, i.e., 1713481 + 1092025 = 1309^2 + 1045^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5555 + ... + 6038.

2^2805506 is an apocalyptic number.

2805506 is a deficient number, since it is larger than the sum of its proper divisors (1820500).

2805506 is a wasteful number, since it uses less digits than its factorization.

2805506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11617 (or 11606 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2805506 is about 1674.9644772353. The cubic root of 2805506 is about 141.0383008806.

It can be divided in two parts, 2 and 805506, that added together give a palindrome (805508).

The spelling of 2805506 in words is "two million, eight hundred five thousand, five hundred six".