165224972 has 24 divisors (see below), whose sum is σ = 333985680. Its totient is φ = 70684160.

The previous prime is 165224971. The next prime is 165224987. The reversal of 165224972 is 279422561.

165224972 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165224971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109697 + ... + 111192.

It is an arithmetic number, because the mean of its divisors is an integer number (13916070).

Almost surely, 2^165224972 is an apocalyptic number.

It is an amenable number.

165224972 is an abundant number, since it is smaller than the sum of its proper divisors (168760708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165224972 is a wasteful number, since it uses less digits than its factorization.

165224972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220921 (or 220919 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 165224972 is about 12853.9866189443. The cubic root of 165224972 is about 548.7298203983.

The spelling of 165224972 in words is "one hundred sixty-five million, two hundred twenty-four thousand, nine hundred seventy-two".