166106250 has 72 divisors (see below), whose sum is σ = 449994636. Its totient is φ = 44280000.

The previous prime is 166106231. The next prime is 166106257. The reversal of 166106250 is 52601661.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5602689 + 160503561 = 2367^2 + 12669^2 .

It is not an unprimeable number, because it can be changed into a prime (166106257) 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 35 ways as a sum of consecutive naturals, for example, 54774 + ... + 57726.

Almost surely, 2^166106250 is an apocalyptic number.

166106250 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 166106250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224997318).

166106250 is an abundant number, since it is smaller than the sum of its proper divisors (283888386).

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

166106250 is an equidigital number, since it uses as much as digits as its factorization.

166106250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2963 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 166106250 is about 12888.2213668140. The cubic root of 166106250 is about 549.7036971500.

The spelling of 166106250 in words is "one hundred sixty-six million, one hundred six thousand, two hundred fifty".