2564562223 has 4 divisors (see below), whose sum is σ = 2581774200. Its totient is φ = 2547350248.

The previous prime is 2564562211. The next prime is 2564562229. The reversal of 2564562223 is 3222654652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2564562223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564562229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8605765 + ... + 8606062.

It is an arithmetic number, because the mean of its divisors is an integer number (645443550).

Almost surely, 2^2564562223 is an apocalyptic number.

2564562223 is a deficient number, since it is larger than the sum of its proper divisors (17211977).

2564562223 is a wasteful number, since it uses less digits than its factorization.

2564562223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17211976.

The product of its digits is 172800, while the sum is 37.

The square root of 2564562223 is about 50641.5069187322. The cubic root of 2564562223 is about 1368.7929096227.

The spelling of 2564562223 in words is "two billion, five hundred sixty-four million, five hundred sixty-two thousand, two hundred twenty-three".