165350217 has 16 divisors (see below), whose sum is σ = 233640000. Its totient is φ = 103725504.

The previous prime is 165350209. The next prime is 165350219. The reversal of 165350217 is 712053561.

165350217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165350217 - 2³ = 165350209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165350219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (14602500).

Almost surely, 2^165350217 is an apocalyptic number.

It is an amenable number.

165350217 is a deficient number, since it is larger than the sum of its proper divisors (68289783).

165350217 is a wasteful number, since it uses less digits than its factorization.

165350217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19640.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 165350217 is about 12858.8575309006. The cubic root of 165350217 is about 548.8684360638.

The spelling of 165350217 in words is "one hundred sixty-five million, three hundred fifty thousand, two hundred seventeen".