165611052 has 54 divisors (see below), whose sum is σ = 432658044. Its totient is φ = 53411760.

The previous prime is 165611051. The next prime is 165611077. The reversal of 165611052 is 250116561.

It is a happy number.

165611052 is a `hidden beast` number, since 1 + 656 + 1 + 1 + 0 + 5 + 2 = 666.

165611052 is digitally balanced in base 2, 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 (165611051) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 32203 + ... + 36989.

It is an arithmetic number, because the mean of its divisors is an integer number (8012186).

Almost surely, 2^165611052 is an apocalyptic number.

165611052 is a gapful number since it is divisible by the number (12) 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 165611052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216329022).

165611052 is an abundant number, since it is smaller than the sum of its proper divisors (267046992).

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

165611052 is a wasteful number, since it uses less digits than its factorization.

165611052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859 (or 4823 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 165611052 is about 12868.9957650160. The cubic root of 165611052 is about 549.1568922631.

The spelling of 165611052 in words is "one hundred sixty-five million, six hundred eleven thousand, fifty-two".