165424211 has 16 divisors (see below), whose sum is σ = 175841280. Its totient is φ = 155305920.

The previous prime is 165424199. The next prime is 165424213. The reversal of 165424211 is 112424561.

165424211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165424211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165424213) 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, 431726 + ... + 432108.

It is an arithmetic number, because the mean of its divisors is an integer number (10990080).

Almost surely, 2^165424211 is an apocalyptic number.

165424211 is a deficient number, since it is larger than the sum of its proper divisors (10417069).

165424211 is a wasteful number, since it uses less digits than its factorization.

165424211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706.

The product of its digits is 1920, while the sum is 26.

The square root of 165424211 is about 12861.7343698274. The cubic root of 165424211 is about 548.9502964835.

Adding to 165424211 its reverse (112424561), we get a palindrome (277848772).

It can be divided in two parts, 165424 and 211, that multiplied together give a square (34904464 = 5908²).

The spelling of 165424211 in words is "one hundred sixty-five million, four hundred twenty-four thousand, two hundred eleven".