13226553 has 12 divisors (see below), whose sum is σ = 19721728. Its totient is φ = 8533080.

The previous prime is 13226531. The next prime is 13226579. The reversal of 13226553 is 35562231.

13226553 is a `hidden beast` number, since 1 + 3 + 2 + 2 + 655 + 3 = 666.

13226553 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13226553 - 2⁹ = 13226041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13226503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23425 + ... + 23982.

Almost surely, 2^13226553 is an apocalyptic number.

It is an amenable number.

13226553 is a deficient number, since it is larger than the sum of its proper divisors (6495175).

13226553 is a wasteful number, since it uses less digits than its factorization.

13226553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47444 (or 47441 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 13226553 is about 3636.8328254128. The cubic root of 13226553 is about 236.4915124929.

Adding to 13226553 its reverse (35562231), we get a palindrome (48788784).

It can be divided in two parts, 1322 and 6553, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 13226553 in words is "thirteen million, two hundred twenty-six thousand, five hundred fifty-three".