166050173 has 2 divisors, whose sum is σ = 166050174. Its totient is φ = 166050172.

The previous prime is 166050151. The next prime is 166050193. The reversal of 166050173 is 371050661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145274809 + 20775364 = 12053^2 + 4558^2 .

It is a cyclic number.

It is not a de Polignac number, because 166050173 - 2⁶ = 166050109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166050193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83025086 + 83025087.

It is an arithmetic number, because the mean of its divisors is an integer number (83025087).

Almost surely, 2^166050173 is an apocalyptic number.

It is an amenable number.

166050173 is a deficient number, since it is larger than the sum of its proper divisors (1).

166050173 is an equidigital number, since it uses as much as digits as its factorization.

166050173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 166050173 is about 12886.0456696381. The cubic root of 166050173 is about 549.6418307166.

The spelling of 166050173 in words is "one hundred sixty-six million, fifty thousand, one hundred seventy-three".