166003273 has 2 divisors, whose sum is σ = 166003274. Its totient is φ = 166003272.

The previous prime is 166003223. The next prime is 166003291. The reversal of 166003273 is 372300661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88510464 + 77492809 = 9408^2 + 8803^2 .

It is an emirp because it is prime and its reverse (372300661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166003273 is a prime.

It is not a weakly prime, because it can be changed into another prime (166003223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83001636 + 83001637.

It is an arithmetic number, because the mean of its divisors is an integer number (83001637).

Almost surely, 2^166003273 is an apocalyptic number.

It is an amenable number.

166003273 is a deficient number, since it is larger than the sum of its proper divisors (1).

166003273 is an equidigital number, since it uses as much as digits as its factorization.

166003273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 166003273 is about 12884.2257431326. The cubic root of 166003273 is about 549.5900780269.

The spelling of 166003273 in words is "one hundred sixty-six million, three thousand, two hundred seventy-three".