13573523 has 4 divisors (see below), whose sum is σ = 13581048. Its totient is φ = 13566000.

The previous prime is 13573513. The next prime is 13573559. The reversal of 13573523 is 32537531.

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 13573523 - 2⁴ = 13573507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13573513) 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, 740 + ... + 5262.

It is an arithmetic number, because the mean of its divisors is an integer number (3395262).

Almost surely, 2^13573523 is an apocalyptic number.

13573523 is a deficient number, since it is larger than the sum of its proper divisors (7525).

13573523 is an equidigital number, since it uses as much as digits as its factorization.

13573523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7524.

The product of its digits is 9450, while the sum is 29.

The square root of 13573523 is about 3684.2262416958. The cubic root of 13573523 is about 238.5416365066.

The spelling of 13573523 in words is "thirteen million, five hundred seventy-three thousand, five hundred twenty-three".