166531050 has 144 divisors (see below), whose sum is σ = 529251840. Its totient is φ = 36731520.

The previous prime is 166531033. The next prime is 166531051. The reversal of 166531050 is 50135661.

It is a happy number.

166531050 is a `hidden beast` number, since 1 + 6 + 653 + 1 + 0 + 5 + 0 = 666.

It is a super-2 number, since 2×166531050² = 55465181228205000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166531051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 90439 + ... + 92261.

It is an arithmetic number, because the mean of its divisors is an integer number (3675360).

Almost surely, 2^166531050 is an apocalyptic number.

166531050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166531050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264625920).

166531050 is an abundant number, since it is smaller than the sum of its proper divisors (362720790).

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

166531050 is a wasteful number, since it uses less digits than its factorization.

166531050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 166531050 is about 12904.6910075368. The cubic root of 166531050 is about 550.1719021893.

The spelling of 166531050 in words is "one hundred sixty-six million, five hundred thirty-one thousand, fifty".