166202573 has 2 divisors, whose sum is σ = 166202574. Its totient is φ = 166202572.

The previous prime is 166202539. The next prime is 166202579. The reversal of 166202573 is 375202661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116683204 + 49519369 = 10802^2 + 7037^2 .

It is an emirp because it is prime and its reverse (375202661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166202573 - 2⁸ = 166202317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166202579) 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 as a sum of consecutive naturals, namely, 83101286 + 83101287.

It is an arithmetic number, because the mean of its divisors is an integer number (83101287).

Almost surely, 2^166202573 is an apocalyptic number.

It is an amenable number.

166202573 is a deficient number, since it is larger than the sum of its proper divisors (1).

166202573 is an equidigital number, since it uses as much as digits as its factorization.

166202573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 166202573 is about 12891.9576868682. The cubic root of 166202573 is about 549.8099321204.

The spelling of 166202573 in words is "one hundred sixty-six million, two hundred two thousand, five hundred seventy-three".