166251273 has 16 divisors (see below), whose sum is σ = 233640000. Its totient is φ = 104863680.

The previous prime is 166251271. The next prime is 166251329. The reversal of 166251273 is 372152661.

It is not a de Polignac number, because 166251273 - 2¹ = 166251271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166251271) 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, 59103 + ... + 61851.

It is an arithmetic number, because the mean of its divisors is an integer number (14602500).

Almost surely, 2^166251273 is an apocalyptic number.

It is an amenable number.

166251273 is a deficient number, since it is larger than the sum of its proper divisors (67388727).

166251273 is a wasteful number, since it uses less digits than its factorization.

166251273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832.

The product of its digits is 15120, while the sum is 33.

The square root of 166251273 is about 12893.8463229558. The cubic root of 166251273 is about 549.8636278974.

The spelling of 166251273 in words is "one hundred sixty-six million, two hundred fifty-one thousand, two hundred seventy-three".