165539088 has 120 divisors (see below), whose sum is σ = 544340160. Its totient is φ = 46298880.

The previous prime is 165539057. The next prime is 165539113. The reversal of 165539088 is 880935561.

165539088 is a `hidden beast` number, since 1 + 6 + 553 + 90 + 8 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16573 + ... + 24611.

It is an arithmetic number, because the mean of its divisors is an integer number (4536168).

Almost surely, 2^165539088 is an apocalyptic number.

165539088 is a gapful number since it is divisible by the number (18) 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 165539088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272170080).

165539088 is an abundant number, since it is smaller than the sum of its proper divisors (378801072).

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

165539088 is a wasteful number, since it uses less digits than its factorization.

165539088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077 (or 8068 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 165539088 is about 12866.1994388397. The cubic root of 165539088 is about 549.0773378861.

The spelling of 165539088 in words is "one hundred sixty-five million, five hundred thirty-nine thousand, eighty-eight".