165272222 has 32 divisors (see below), whose sum is σ = 270842880. Its totient is φ = 75349440.

The previous prime is 165272201. The next prime is 165272243. The reversal of 165272222 is 222272561.

It is an interprime number because it is at equal distance from previous prime (165272201) and next prime (165272243).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361418 + ... + 361874.

It is an arithmetic number, because the mean of its divisors is an integer number (8463840).

Almost surely, 2^165272222 is an apocalyptic number.

165272222 is a deficient number, since it is larger than the sum of its proper divisors (105570658).

165272222 is a wasteful number, since it uses less digits than its factorization.

165272222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its digits is 6720, while the sum is 29.

The square root of 165272222 is about 12855.8244387515. The cubic root of 165272222 is about 548.7821228491.

The spelling of 165272222 in words is "one hundred sixty-five million, two hundred seventy-two thousand, two hundred twenty-two".