165512032 has 48 divisors (see below), whose sum is σ = 378538272. Its totient is φ = 69765120.

The previous prime is 165512027. The next prime is 165512089. The reversal of 165512032 is 230215561.

It is a junction number, because it is equal to n+sod(n) for n = 165511988 and 165512006.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 7608 + ... + 19720.

It is an arithmetic number, because the mean of its divisors is an integer number (7886214).

Almost surely, 2^165512032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165512032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189269136).

165512032 is an abundant number, since it is smaller than the sum of its proper divisors (213026240).

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

165512032 is a wasteful number, since it uses less digits than its factorization.

165512032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191 (or 12183 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 165512032 is about 12865.1479587294. The cubic root of 165512032 is about 549.0474222006.

Adding to 165512032 its reverse (230215561), we get a palindrome (395727593).

The spelling of 165512032 in words is "one hundred sixty-five million, five hundred twelve thousand, thirty-two".