165172822 has 16 divisors (see below), whose sum is σ = 254503872. Its totient is φ = 80368200.

The previous prime is 165172807. The next prime is 165172829. The reversal of 165172822 is 228271561.

It is a happy number.

165172822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165172822² = 54564122254887368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165172829) 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, 3697 + ... + 18547.

It is an arithmetic number, because the mean of its divisors is an integer number (15906492).

Almost surely, 2^165172822 is an apocalyptic number.

165172822 is a deficient number, since it is larger than the sum of its proper divisors (89331050).

165172822 is a wasteful number, since it uses less digits than its factorization.

165172822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15003.

The product of its digits is 13440, while the sum is 34.

The square root of 165172822 is about 12851.9579053154. The cubic root of 165172822 is about 548.6720824123.

The spelling of 165172822 in words is "one hundred sixty-five million, one hundred seventy-two thousand, eight hundred twenty-two".