170872223 has 2 divisors, whose sum is σ = 170872224. Its totient is φ = 170872222.

The previous prime is 170872139. The next prime is 170872237. The reversal of 170872223 is 322278071.

It is a strong prime.

It is an emirp because it is prime and its reverse (322278071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170872223 - 2¹⁶ = 170806687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170872223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170872123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85436111 + 85436112.

It is an arithmetic number, because the mean of its divisors is an integer number (85436112).

Almost surely, 2^170872223 is an apocalyptic number.

170872223 is a deficient number, since it is larger than the sum of its proper divisors (1).

170872223 is an equidigital number, since it uses as much as digits as its factorization.

170872223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 170872223 is about 13071.8102418908. The cubic root of 170872223 is about 554.9116251352.

The spelling of 170872223 in words is "one hundred seventy million, eight hundred seventy-two thousand, two hundred twenty-three".