159805 has 8 divisors (see below), whose sum is σ = 198144. Its totient is φ = 123600.

The previous prime is 159799. The next prime is 159811. The reversal of 159805 is 508951.

159805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (159799) and next prime (159811).

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

It is not a de Polignac number, because 159805 - 2⁵ = 159773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361 + ... + 670.

It is an arithmetic number, because the mean of its divisors is an integer number (24768).

2¹⁵⁹⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

159805 is a deficient number, since it is larger than the sum of its proper divisors (38339).

159805 is a wasteful number, since it uses less digits than its factorization.

159805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 159805 is about 399.7561756871. The cubic root of 159805 is about 54.2662887230.

The spelling of 159805 in words is "one hundred fifty-nine thousand, eight hundred five".