166204250 has 32 divisors (see below), whose sum is σ = 312333840. Its totient is φ = 66225600.

The previous prime is 166204243. The next prime is 166204253. The reversal of 166204250 is 52402661.

It can be written as a sum of positive squares in 8 ways, for example, as 4583881 + 161620369 = 2141^2 + 12713^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166204253) 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 15 ways as a sum of consecutive naturals, for example, 72116 + ... + 74384.

Almost surely, 2^166204250 is an apocalyptic number.

166204250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166204250 is a deficient number, since it is larger than the sum of its proper divisors (146129590).

166204250 is a wasteful number, since it uses less digits than its factorization.

166204250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579 (or 2569 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 166204250 is about 12892.0227272527. The cubic root of 166204250 is about 549.8117813260.

The spelling of 166204250 in words is "one hundred sixty-six million, two hundred four thousand, two hundred fifty".