165552144 has 20 divisors (see below), whose sum is σ = 427676496. Its totient is φ = 55184032.

The previous prime is 165552139. The next prime is 165552199. The reversal of 165552144 is 441255561.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1724454 + ... + 1724549.

Almost surely, 2^165552144 is an apocalyptic number.

It is an amenable number.

165552144 is an abundant number, since it is smaller than the sum of its proper divisors (262124352).

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

165552144 is a wasteful number, since it uses less digits than its factorization.

165552144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449014 (or 3449008 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 165552144 is about 12866.7068047733. The cubic root of 165552144 is about 549.0917726747.

The spelling of 165552144 in words is "one hundred sixty-five million, five hundred fifty-two thousand, one hundred forty-four".