159788171 has 4 divisors (see below), whose sum is σ = 159831000. Its totient is φ = 159745344.

The previous prime is 159788159. The next prime is 159788177. The reversal of 159788171 is 171887951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159788171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159788177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15221 + ... + 23478.

It is an arithmetic number, because the mean of its divisors is an integer number (39957750).

Almost surely, 2^159788171 is an apocalyptic number.

159788171 is a deficient number, since it is larger than the sum of its proper divisors (42829).

159788171 is an equidigital number, since it uses as much as digits as its factorization.

159788171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42828.

The product of its digits is 141120, while the sum is 47.

The square root of 159788171 is about 12640.7345909959. The cubic root of 159788171 is about 542.6438373581.

The spelling of 159788171 in words is "one hundred fifty-nine million, seven hundred eighty-eight thousand, one hundred seventy-one".