159797 has 8 divisors (see below), whose sum is σ = 177600. Its totient is φ = 142560.

The previous prime is 159793. The next prime is 159799. The reversal of 159797 is 797951.

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

It is not a de Polignac number, because 159797 - 2² = 159793 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 159797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159791) 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, 704 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (22200).

2¹⁵⁹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

159797 is a deficient number, since it is larger than the sum of its proper divisors (17803).

159797 is a wasteful number, since it uses less digits than its factorization.

159797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its digits is 19845, while the sum is 38.

The square root of 159797 is about 399.7461694626. The cubic root of 159797 is about 54.2653831661.

The spelling of 159797 in words is "one hundred fifty-nine thousand, seven hundred ninety-seven".