165066159 has 4 divisors (see below), whose sum is σ = 220088216. Its totient is φ = 110044104.

The previous prime is 165066151. The next prime is 165066197. The reversal of 165066159 is 951660561.

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

It is not a de Polignac number, because 165066159 - 2³ = 165066151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165066151) 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, 27511024 + ... + 27511029.

It is an arithmetic number, because the mean of its divisors is an integer number (55022054).

Almost surely, 2^165066159 is an apocalyptic number.

165066159 is a deficient number, since it is larger than the sum of its proper divisors (55022057).

165066159 is an equidigital number, since it uses as much as digits as its factorization.

165066159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55022056.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 165066159 is about 12847.8075561553. The cubic root of 165066159 is about 548.5539523803.

The spelling of 165066159 in words is "one hundred sixty-five million, sixty-six thousand, one hundred fifty-nine".