13897553 has 4 divisors (see below), whose sum is σ = 13908720. Its totient is φ = 13886388.

The previous prime is 13897549. The next prime is 13897561. The reversal of 13897553 is 35579831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13897553 - 2² = 13897549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13897553.

It is not an unprimeable number, because it can be changed into a prime (13897523) 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, 3443 + ... + 6296.

It is an arithmetic number, because the mean of its divisors is an integer number (3477180).

Almost surely, 2^13897553 is an apocalyptic number.

It is an amenable number.

13897553 is a deficient number, since it is larger than the sum of its proper divisors (11167).

13897553 is an equidigital number, since it uses as much as digits as its factorization.

13897553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11166.

The product of its digits is 113400, while the sum is 41.

The square root of 13897553 is about 3727.9421937578. The cubic root of 13897553 is about 240.4249012368.

The spelling of 13897553 in words is "thirteen million, eight hundred ninety-seven thousand, five hundred fifty-three".