13500523 has 4 divisors (see below), whose sum is σ = 13865440. Its totient is φ = 13135608.

The previous prime is 13500493. The next prime is 13500551. The reversal of 13500523 is 32500531.

13500523 is digitally balanced in base 3, 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 13500523 - 2⁵ = 13500491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13500523.

It is not an unprimeable number, because it can be changed into a prime (13500623) 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, 182403 + ... + 182476.

It is an arithmetic number, because the mean of its divisors is an integer number (3466360).

Almost surely, 2^13500523 is an apocalyptic number.

13500523 is a deficient number, since it is larger than the sum of its proper divisors (364917).

13500523 is an equidigital number, since it uses as much as digits as its factorization.

13500523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364916.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 13500523 is about 3674.3057847708. The cubic root of 13500523 is about 238.1132326102.

The spelling of 13500523 in words is "thirteen million, five hundred thousand, five hundred twenty-three".