71170189 has 2 divisors, whose sum is σ = 71170190. Its totient is φ = 71170188.

The previous prime is 71170171. The next prime is 71170199. The reversal of 71170189 is 98107117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68194564 + 2975625 = 8258^2 + 1725^2 .

It is an emirp because it is prime and its reverse (98107117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71170189 - 2¹⁷ = 71039117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71170139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35585094 + 35585095.

It is an arithmetic number, because the mean of its divisors is an integer number (35585095).

Almost surely, 2^71170189 is an apocalyptic number.

It is an amenable number.

71170189 is a deficient number, since it is larger than the sum of its proper divisors (1).

71170189 is an equidigital number, since it uses as much as digits as its factorization.

71170189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 71170189 is about 8436.2425877875. The cubic root of 71170189 is about 414.4123661636.

The spelling of 71170189 in words is "seventy-one million, one hundred seventy thousand, one hundred eighty-nine".