15897 has 8 divisors (see below), whose sum is σ = 24256. Its totient is φ = 9072.

The previous prime is 15889. The next prime is 15901. The reversal of 15897 is 79851.

15897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15897 - 2³ = 15889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358 + ... + 399.

It is an arithmetic number, because the mean of its divisors is an integer number (3032).

2¹⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

15897 is a deficient number, since it is larger than the sum of its proper divisors (8359).

15897 is an equidigital number, since it uses as much as digits as its factorization.

15897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its digits is 2520, while the sum is 30.

The square root of 15897 is about 126.0833057942. The cubic root of 15897 is about 25.1442329408.

It can be divided in two parts, 1589 and 7, that added together give a triangular number (1596 = T₅₆).

The spelling of 15897 in words is "fifteen thousand, eight hundred ninety-seven".