11887523 has 4 divisors (see below), whose sum is σ = 11894568. Its totient is φ = 11880480.

The previous prime is 11887517. The next prime is 11887541. The reversal of 11887523 is 32578811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11887523 - 2⁴ = 11887507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11887543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683 + ... + 4923.

It is an arithmetic number, because the mean of its divisors is an integer number (2973642).

Almost surely, 2^11887523 is an apocalyptic number.

11887523 is a deficient number, since it is larger than the sum of its proper divisors (7045).

11887523 is an equidigital number, since it uses as much as digits as its factorization.

11887523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7044.

The product of its digits is 13440, while the sum is 35.

The square root of 11887523 is about 3447.8287370460. The cubic root of 11887523 is about 228.2253018115.

The spelling of 11887523 in words is "eleven million, eight hundred eighty-seven thousand, five hundred twenty-three".