165506052 has 12 divisors (see below), whose sum is σ = 386180816. Its totient is φ = 55168680.

The previous prime is 165506039. The next prime is 165506057. The reversal of 165506052 is 250605561.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (165506057) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6896074 + ... + 6896097.

Almost surely, 2^165506052 is an apocalyptic number.

165506052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165506052 is an abundant number, since it is smaller than the sum of its proper divisors (220674764).

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

165506052 is a wasteful number, since it uses less digits than its factorization.

165506052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13792178 (or 13792176 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 165506052 is about 12864.9155457780. The cubic root of 165506052 is about 549.0408097042.

The spelling of 165506052 in words is "one hundred sixty-five million, five hundred six thousand, fifty-two".