2321564 has 12 divisors (see below), whose sum is σ = 4643184. Its totient is φ = 994944.

The previous prime is 2321563. The next prime is 2321587. The reversal of 2321564 is 4651232.

2321564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2321564 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321563) 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 3 ways as a sum of consecutive naturals, for example, 41429 + ... + 41484.

It is an arithmetic number, because the mean of its divisors is an integer number (386932).

2^2321564 is an apocalyptic number.

It is an amenable number.

2321564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2321564 is a wasteful number, since it uses less digits than its factorization.

2321564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82924 (or 82922 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 2321564 is about 1523.6679428274. The cubic root of 2321564 is about 132.4118602142.

Adding to 2321564 its reverse (4651232), we get a palindrome (6972796).

The spelling of 2321564 in words is "two million, three hundred twenty-one thousand, five hundred sixty-four".