159771 has 8 divisors (see below), whose sum is σ = 224320. Its totient is φ = 100872.

The previous prime is 159769. The next prime is 159773. The reversal of 159771 is 177951.

It is an interprime number because it is at equal distance from previous prime (159769) and next prime (159773).

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

It is not a de Polignac number, because 159771 - 2¹ = 159769 is a prime.

It is a Duffinian number.

159771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (159773) 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, 1345 + ... + 1458.

It is an arithmetic number, because the mean of its divisors is an integer number (28040).

2¹⁵⁹⁷⁷¹ is an apocalyptic number.

159771 is a deficient number, since it is larger than the sum of its proper divisors (64549).

159771 is a wasteful number, since it uses less digits than its factorization.

159771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825.

The product of its digits is 2205, while the sum is 30.

The square root of 159771 is about 399.7136475028. The cubic root of 159771 is about 54.2624398975.

The spelling of 159771 in words is "one hundred fifty-nine thousand, seven hundred seventy-one".