2564523 has 24 divisors (see below), whose sum is σ = 4167072. Its totient is φ = 1507968.

The previous prime is 2564521. The next prime is 2564539. The reversal of 2564523 is 3254652.

2564523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2564523 - 2¹ = 2564521 is a prime.

It is a d-powerful number, because it can be written as 2³ + 5⁷ + 6⁴ + 4² + 5⁹ + 2⁹ + 3¹² .

It is not an unprimeable number, because it can be changed into a prime (2564521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2215 + ... + 3167.

It is an arithmetic number, because the mean of its divisors is an integer number (173628).

2^2564523 is an apocalyptic number.

2564523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2564523 is a deficient number, since it is larger than the sum of its proper divisors (1602549).

2564523 is a wasteful number, since it uses less digits than its factorization.

2564523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 992 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 2564523 is about 1601.4128137367. The cubic root of 2564523 is about 136.8785931377.

The spelling of 2564523 in words is "two million, five hundred sixty-four thousand, five hundred twenty-three".