165545612 has 6 divisors (see below), whose sum is σ = 289704828. Its totient is φ = 82772804.

The previous prime is 165545599. The next prime is 165545629. The reversal of 165545612 is 216545561.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20693198 + ... + 20693205.

It is an arithmetic number, because the mean of its divisors is an integer number (48284138).

Almost surely, 2^165545612 is an apocalyptic number.

It is an amenable number.

165545612 is a deficient number, since it is larger than the sum of its proper divisors (124159216).

165545612 is a wasteful number, since it uses less digits than its factorization.

165545612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41386407 (or 41386405 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 165545612 is about 12866.4529688644. The cubic root of 165545612 is about 549.0845509528.

The spelling of 165545612 in words is "one hundred sixty-five million, five hundred forty-five thousand, six hundred twelve".