165143271 has 8 divisors (see below), whose sum is σ = 220280944. Its totient is φ = 110050560.

The previous prime is 165143267. The next prime is 165143273. The reversal of 165143271 is 172341561.

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

It is not a de Polignac number, because 165143271 - 2² = 165143267 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 (165143273) 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, 1450 + ... + 18231.

It is an arithmetic number, because the mean of its divisors is an integer number (27535118).

Almost surely, 2^165143271 is an apocalyptic number.

165143271 is a deficient number, since it is larger than the sum of its proper divisors (55137673).

165143271 is a wasteful number, since it uses less digits than its factorization.

165143271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22481.

The product of its digits is 5040, while the sum is 30.

The square root of 165143271 is about 12850.8081847018. The cubic root of 165143271 is about 548.6393595637.

The spelling of 165143271 in words is "one hundred sixty-five million, one hundred forty-three thousand, two hundred seventy-one".