13553243 has 8 divisors (see below), whose sum is σ = 14817600. Its totient is φ = 12294280.

The previous prime is 13553209. The next prime is 13553257. The reversal of 13553243 is 34235531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13553243 - 2¹⁶ = 13487707 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 5408 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^13553243 is an apocalyptic number.

13553243 is a deficient number, since it is larger than the sum of its proper divisors (1264357).

13553243 is a wasteful number, since it uses less digits than its factorization.

13553243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697.

The product of its digits is 5400, while the sum is 26.

The square root of 13553243 is about 3681.4729389200. The cubic root of 13553243 is about 238.4227767809.

Adding to 13553243 its reverse (34235531), we get a palindrome (47788774).

The spelling of 13553243 in words is "thirteen million, five hundred fifty-three thousand, two hundred forty-three".