165535488 has 126 divisors (see below), whose sum is σ = 495968424. Its totient is φ = 55116288.

The previous prime is 165535481. The next prime is 165535507. The reversal of 165535488 is 884535561.

165535488 is a `hidden beast` number, since 16 + 553 + 5 + 4 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165535481) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 186181 + ... + 187067.

Almost surely, 2^165535488 is an apocalyptic number.

165535488 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 165535488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247984212).

165535488 is an abundant number, since it is smaller than the sum of its proper divisors (330432936).

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

165535488 is an frugal number, since it uses more digits than its factorization.

165535488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 892 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 165535488 is about 12866.0595366258. The cubic root of 165535488 is about 549.0733575719.

The spelling of 165535488 in words is "one hundred sixty-five million, five hundred thirty-five thousand, four hundred eighty-eight".