2563263 has 6 divisors (see below), whose sum is σ = 3702504. Its totient is φ = 1708836.

The previous prime is 2563261. The next prime is 2563291. The reversal of 2563263 is 3623652.

2563263 is a `hidden beast` number, since 25 + 632 + 6 + 3 = 666.

It is not a de Polignac number, because 2563263 - 2¹ = 2563261 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 5⁹ + 6⁵ + 3¹⁰ + 2¹¹ + 6⁵ + 3¹² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142395 + ... + 142412.

It is an arithmetic number, because the mean of its divisors is an integer number (617084).

2^2563263 is an apocalyptic number.

2563263 is a deficient number, since it is larger than the sum of its proper divisors (1139241).

2563263 is a wasteful number, since it uses less digits than its factorization.

2563263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284813 (or 284810 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 2563263 is about 1601.0193627811. The cubic root of 2563263 is about 136.8561724275.

The spelling of 2563263 in words is "two million, five hundred sixty-three thousand, two hundred sixty-three".