2805263 has 2 divisors, whose sum is σ = 2805264. Its totient is φ = 2805262.

The previous prime is 2805259. The next prime is 2805311. The reversal of 2805263 is 3625082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2805263 - 2² = 2805259 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2805203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402631 + 1402632.

It is an arithmetic number, because the mean of its divisors is an integer number (1402632).

2^2805263 is an apocalyptic number.

2805263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805263 is an equidigital number, since it uses as much as digits as its factorization.

2805263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2805263 is about 1674.8919368126. The cubic root of 2805263 is about 141.0342287338.

The spelling of 2805263 in words is "two million, eight hundred five thousand, two hundred sixty-three".