165250213 has 16 divisors (see below), whose sum is σ = 172972800. Its totient is φ = 157749120.

The previous prime is 165250187. The next prime is 165250231. The reversal of 165250213 is 312052561.

It is a cyclic number.

It is not a de Polignac number, because 165250213 - 2⁹ = 165249701 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 (165250513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460128 + ... + 460486.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^165250213 is an apocalyptic number.

It is an amenable number.

165250213 is a deficient number, since it is larger than the sum of its proper divisors (7722587).

165250213 is a wasteful number, since it uses less digits than its factorization.

165250213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 165250213 is about 12854.9684169196. The cubic root of 165250213 is about 548.7577616633.

The spelling of 165250213 in words is "one hundred sixty-five million, two hundred fifty thousand, two hundred thirteen".