13272521 has 4 divisors (see below), whose sum is σ = 13289472. Its totient is φ = 13255572.

The previous prime is 13272491. The next prime is 13272551. The reversal of 13272521 is 12527231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12527231 = 991 ⋅12641.

It is an interprime number because it is at equal distance from previous prime (13272491) and next prime (13272551).

It is a cyclic number.

It is not a de Polignac number, because 13272521 - 2¹⁰ = 13271497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13272551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7241 + ... + 8886.

It is an arithmetic number, because the mean of its divisors is an integer number (3322368).

Almost surely, 2^13272521 is an apocalyptic number.

It is an amenable number.

13272521 is a deficient number, since it is larger than the sum of its proper divisors (16951).

13272521 is an equidigital number, since it uses as much as digits as its factorization.

13272521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16950.

The product of its digits is 840, while the sum is 23.

The square root of 13272521 is about 3643.1471285140. The cubic root of 13272521 is about 236.7651658589.

Adding to 13272521 its reverse (12527231), we get a palindrome (25799752).

The spelling of 13272521 in words is "thirteen million, two hundred seventy-two thousand, five hundred twenty-one".