13553213 has 16 divisors (see below), whose sum is σ = 14921280. Its totient is φ = 12265344.

The previous prime is 13553209. The next prime is 13553257. The reversal of 13553213 is 31235531.

It is a cyclic number.

It is not a de Polignac number, because 13553213 - 2² = 13553209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553203) 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, 43145 + ... + 43457.

It is an arithmetic number, because the mean of its divisors is an integer number (932580).

Almost surely, 2^13553213 is an apocalyptic number.

It is an amenable number.

13553213 is a deficient number, since it is larger than the sum of its proper divisors (1368067).

13553213 is a wasteful number, since it uses less digits than its factorization.

13553213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its digits is 1350, while the sum is 23.

The square root of 13553213 is about 3681.4688644616. The cubic root of 13553213 is about 238.4226008651.

Adding to 13553213 its reverse (31235531), we get a palindrome (44788744).

The spelling of 13553213 in words is "thirteen million, five hundred fifty-three thousand, two hundred thirteen".