13320553 has 4 divisors (see below), whose sum is σ = 13438548. Its totient is φ = 13202560.

The previous prime is 13320551. The next prime is 13320557. The reversal of 13320553 is 35502331.

It is a happy number.

13320553 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 5992704 + 7327849 = 2448^2 + 2707^2 .

It is a cyclic number.

It is not a de Polignac number, because 13320553 - 2¹ = 13320551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13320551) 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, 58828 + ... + 59053.

It is an arithmetic number, because the mean of its divisors is an integer number (3359637).

Almost surely, 2^13320553 is an apocalyptic number.

It is an amenable number.

13320553 is a deficient number, since it is larger than the sum of its proper divisors (117995).

13320553 is a wasteful number, since it uses less digits than its factorization.

13320553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117994.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 13320553 is about 3649.7332779259. The cubic root of 13320553 is about 237.0504322758.

Adding to 13320553 its reverse (35502331), we get a palindrome (48822884).

The spelling of 13320553 in words is "thirteen million, three hundred twenty thousand, five hundred fifty-three".