165454500 has 96 divisors (see below), whose sum is σ = 488726784. Its totient is φ = 43488000.

The previous prime is 165454481. The next prime is 165454501. The reversal of 165454500 is 5454561.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (165454501) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 108745 + ... + 110255.

It is an arithmetic number, because the mean of its divisors is an integer number (5090904).

Almost surely, 2^165454500 is an apocalyptic number.

165454500 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 165454500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244363392).

165454500 is an abundant number, since it is smaller than the sum of its proper divisors (323272284).

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

165454500 is a wasteful number, since it uses less digits than its factorization.

165454500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 165454500 is about 12862.9118009881. The cubic root of 165454500 is about 548.9837985139.

The spelling of 165454500 in words is "one hundred sixty-five million, four hundred fifty-four thousand, five hundred".