13897543 has 16 divisors (see below), whose sum is σ = 15964416. Its totient is φ = 11975040.

The previous prime is 13897523. The next prime is 13897547. The reversal of 13897543 is 34579831.

13897543 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 13897543 - 2⁵ = 13897511 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 13897496 and 13897505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13897547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41071 + ... + 41407.

It is an arithmetic number, because the mean of its divisors is an integer number (997776).

Almost surely, 2^13897543 is an apocalyptic number.

13897543 is a deficient number, since it is larger than the sum of its proper divisors (2066873).

13897543 is a wasteful number, since it uses less digits than its factorization.

13897543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its digits is 90720, while the sum is 40.

The square root of 13897543 is about 3727.9408525351. The cubic root of 13897543 is about 240.4248435708.

The spelling of 13897543 in words is "thirteen million, eight hundred ninety-seven thousand, five hundred forty-three".