165533116 has 48 divisors (see below), whose sum is σ = 354848256. Its totient is φ = 66014784.

The previous prime is 165533083. The next prime is 165533129. The reversal of 165533116 is 611335561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20355 + ... + 27301.

It is an arithmetic number, because the mean of its divisors is an integer number (7392672).

Almost surely, 2^165533116 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 165533116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177424128).

165533116 is an abundant number, since it is smaller than the sum of its proper divisors (189315140).

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

165533116 is a wasteful number, since it uses less digits than its factorization.

165533116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018 (or 7016 counting only the distinct ones).

The product of its digits is 8100, while the sum is 31.

The square root of 165533116 is about 12865.9673557801. The cubic root of 165533116 is about 549.0707349555.

Adding to 165533116 its reverse (611335561), we get a palindrome (776868677).

It can be divided in two parts, 165533 and 116, that added together give a square (165649 = 407²).

The spelling of 165533116 in words is "one hundred sixty-five million, five hundred thirty-three thousand, one hundred sixteen".