13897541 has 4 divisors (see below), whose sum is σ = 15882912. Its totient is φ = 11912172.

The previous prime is 13897523. The next prime is 13897547. The reversal of 13897541 is 14579831.

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 an emirpimes, since its reverse is a distinct semiprime: 14579831 = 7 ⋅2082833.

It is a cyclic number.

It is not a de Polignac number, because 13897541 - 2¹⁰ = 13896517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13897495 and 13897504.

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 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, 992675 + ... + 992688.

It is an arithmetic number, because the mean of its divisors is an integer number (3970728).

Almost surely, 2^13897541 is an apocalyptic number.

It is an amenable number.

13897541 is a deficient number, since it is larger than the sum of its proper divisors (1985371).

13897541 is an equidigital number, since it uses as much as digits as its factorization.

13897541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985370.

The product of its digits is 30240, while the sum is 38.

The square root of 13897541 is about 3727.9405842905. The cubic root of 13897541 is about 240.4248320376.

It can be divided in two parts, 138 and 97541, that added together give a palindrome (97679).

The spelling of 13897541 in words is "thirteen million, eight hundred ninety-seven thousand, five hundred forty-one".