13397553 has 24 divisors (see below), whose sum is σ = 21333312. Its totient is φ = 8049888.

The previous prime is 13397551. The next prime is 13397557. The reversal of 13397553 is 35579331.

It is a happy number.

13397553 is a `hidden beast` number, since 13 + 3 + 97 + 553 = 666.

13397553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13397553 - 2¹ = 13397551 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13397551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3700 + ... + 6362.

It is an arithmetic number, because the mean of its divisors is an integer number (888888).

Almost surely, 2^13397553 is an apocalyptic number.

13397553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13397553 is a deficient number, since it is larger than the sum of its proper divisors (7935759).

13397553 is a wasteful number, since it uses less digits than its factorization.

13397553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2722 counting only the distinct ones).

The product of its digits is 42525, while the sum is 36.

The square root of 13397553 is about 3660.2667935548. The cubic root of 13397553 is about 237.5063148829.

The spelling of 13397553 in words is "thirteen million, three hundred ninety-seven thousand, five hundred fifty-three".