165500244 has 144 divisors (see below), whose sum is σ = 525907200. Its totient is φ = 43606080.

The previous prime is 165500239. The next prime is 165500261. The reversal of 165500244 is 442005561.

165500244 is a `hidden beast` number, since 1 + 655 + 0 + 0 + 2 + 4 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 160009 + ... + 161039.

Almost surely, 2^165500244 is an apocalyptic number.

165500244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165500244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262953600).

165500244 is an abundant number, since it is smaller than the sum of its proper divisors (360406956).

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

165500244 is a wasteful number, since it uses less digits than its factorization.

165500244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 165500244 is about 12864.6898135944. The cubic root of 165500244 is about 549.0343872476.

The spelling of 165500244 in words is "one hundred sixty-five million, five hundred thousand, two hundred forty-four".