11543564 has 24 divisors (see below), whose sum is σ = 21591360. Its totient is φ = 5384016.

The previous prime is 11543551. The next prime is 11543603. The reversal of 11543564 is 46534511.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3959 + ... + 6225.

It is an arithmetic number, because the mean of its divisors is an integer number (899640).

Almost surely, 2^11543564 is an apocalyptic number.

It is an amenable number.

11543564 is a deficient number, since it is larger than the sum of its proper divisors (10047796).

11543564 is a wasteful number, since it uses less digits than its factorization.

11543564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2355 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 11543564 is about 3397.5820814220. The cubic root of 11543564 is about 226.0025321459.

The spelling of 11543564 in words is "eleven million, five hundred forty-three thousand, five hundred sixty-four".