166530500 has 48 divisors (see below), whose sum is σ = 368903808. Its totient is φ = 65660000.

The previous prime is 166530467. The next prime is 166530547. The reversal of 166530500 is 5035661.

166530500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166530500.

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, 33155 + ... + 37845.

It is an arithmetic number, because the mean of its divisors is an integer number (7685496).

Almost surely, 2^166530500 is an apocalyptic number.

166530500 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 166530500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184451904).

166530500 is an abundant number, since it is smaller than the sum of its proper divisors (202373308).

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

166530500 is a wasteful number, since it uses less digits than its factorization.

166530500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781 (or 4769 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 166530500 is about 12904.6696974390. The cubic root of 166530500 is about 550.1712965067.

The spelling of 166530500 in words is "one hundred sixty-six million, five hundred thirty thousand, five hundred".