11385523 has 4 divisors (see below), whose sum is σ = 11427808. Its totient is φ = 11343240.

The previous prime is 11385509. The next prime is 11385527. The reversal of 11385523 is 32558311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32558311 = 3691 ⋅8821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11385523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11385491 and 11385500.

It is not an unprimeable number, because it can be changed into a prime (11385527) 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, 20736 + ... + 21277.

It is an arithmetic number, because the mean of its divisors is an integer number (2856952).

Almost surely, 2^11385523 is an apocalyptic number.

11385523 is a deficient number, since it is larger than the sum of its proper divisors (42285).

11385523 is an equidigital number, since it uses as much as digits as its factorization.

11385523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42284.

The product of its digits is 3600, while the sum is 28.

The square root of 11385523 is about 3374.2440634904. The cubic root of 11385523 is about 224.9664015675.

The spelling of 11385523 in words is "eleven million, three hundred eighty-five thousand, five hundred twenty-three".