13528569 has 16 divisors (see below), whose sum is σ = 18632768. Its totient is φ = 8724672.

The previous prime is 13528561. The next prime is 13528597. The reversal of 13528569 is 96582531.

13528569 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13528569 - 2³ = 13528561 is a prime.

It is a super-2 number, since 2×13528569² = 366044358375522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13528561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33879 + ... + 34275.

It is an arithmetic number, because the mean of its divisors is an integer number (1164548).

Almost surely, 2^13528569 is an apocalyptic number.

It is an amenable number.

13528569 is a deficient number, since it is larger than the sum of its proper divisors (5104199).

13528569 is a wasteful number, since it uses less digits than its factorization.

13528569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744.

The product of its digits is 64800, while the sum is 39.

The square root of 13528569 is about 3678.1203079834. The cubic root of 13528569 is about 238.2780041199.

The spelling of 13528569 in words is "thirteen million, five hundred twenty-eight thousand, five hundred sixty-nine".