13526321 has 4 divisors (see below), whose sum is σ = 13533732. Its totient is φ = 13518912.

The previous prime is 13526297. The next prime is 13526327. The reversal of 13526321 is 12362531.

13526321 is digitally balanced in base 2, 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4906225 + 8620096 = 2215^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 13526321 - 2¹⁰ = 13525297 is a prime.

It is a super-2 number, since 2×13526321² = 365922719590082, 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 (13526327) 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, 1181 + ... + 5333.

It is an arithmetic number, because the mean of its divisors is an integer number (3383433).

Almost surely, 2^13526321 is an apocalyptic number.

It is an amenable number.

13526321 is a deficient number, since it is larger than the sum of its proper divisors (7411).

13526321 is an equidigital number, since it uses as much as digits as its factorization.

13526321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7410.

The product of its digits is 1080, while the sum is 23.

The square root of 13526321 is about 3677.8147044135. The cubic root of 13526321 is about 238.2648054186.

Adding to 13526321 its reverse (12362531), we get a palindrome (25888852).

The spelling of 13526321 in words is "thirteen million, five hundred twenty-six thousand, three hundred twenty-one".