165040500 has 96 divisors (see below), whose sum is σ = 491033088. Its totient is φ = 43056000.

The previous prime is 165040489. The next prime is 165040501. The reversal of 165040500 is 5040561.

It is a happy number.

165040500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165040501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69330 + ... + 71670.

It is an arithmetic number, because the mean of its divisors is an integer number (5114928).

Almost surely, 2^165040500 is an apocalyptic number.

165040500 is a gapful number since it is divisible by the number (10) 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 165040500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245516544).

165040500 is an abundant number, since it is smaller than the sum of its proper divisors (325992588).

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

165040500 is a wasteful number, since it uses less digits than its factorization.

165040500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 2398 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 165040500 is about 12846.8089423016. The cubic root of 165040500 is about 548.5255272621.

The spelling of 165040500 in words is "one hundred sixty-five million, forty thousand, five hundred".