11556523 has 4 divisors (see below), whose sum is σ = 12607128. Its totient is φ = 10505920.

The previous prime is 11556473. The next prime is 11556533. The reversal of 11556523 is 32565511.

11556523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11556523 - 2⁹ = 11556011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11556491 and 11556500.

It is not an unprimeable number, because it can be changed into a prime (11556533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525286 + ... + 525307.

It is an arithmetic number, because the mean of its divisors is an integer number (3151782).

Almost surely, 2^11556523 is an apocalyptic number.

11556523 is a deficient number, since it is larger than the sum of its proper divisors (1050605).

11556523 is a wasteful number, since it uses less digits than its factorization.

11556523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050604.

The product of its digits is 4500, while the sum is 28.

The square root of 11556523 is about 3399.4886380160. The cubic root of 11556523 is about 226.0870719390.

The spelling of 11556523 in words is "eleven million, five hundred fifty-six thousand, five hundred twenty-three".