166153250 has 16 divisors (see below), whose sum is σ = 311039352. Its totient is φ = 66461200.

The previous prime is 166153249. The next prime is 166153289. The reversal of 166153250 is 52351661.

166153250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11175649 + 154977601 = 3343^2 + 12449^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 332057 + ... + 332556.

Almost surely, 2^166153250 is an apocalyptic number.

166153250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166153250 is a deficient number, since it is larger than the sum of its proper divisors (144886102).

166153250 is an equidigital number, since it uses as much as digits as its factorization.

166153250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664630 (or 664620 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 166153250 is about 12890.0446081462. The cubic root of 166153250 is about 549.7555387421.

The spelling of 166153250 in words is "one hundred sixty-six million, one hundred fifty-three thousand, two hundred fifty".