2805556 has 24 divisors (see below), whose sum is σ = 5335904. Its totient is φ = 1283040.

The previous prime is 2805533. The next prime is 2805577. The reversal of 2805556 is 6555082.

It is a super-2 number, since 2×2805556² = 15742288938272, which contains 22 as substring.

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, 8311 + ... + 8641.

2^2805556 is an apocalyptic number.

2805556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2805556 is a deficient number, since it is larger than the sum of its proper divisors (2530348).

2805556 is a wasteful number, since it uses less digits than its factorization.

2805556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2805556 is about 1674.9794028584. The cubic root of 2805556 is about 141.0391387417.

The spelling of 2805556 in words is "two million, eight hundred five thousand, five hundred fifty-six".