170171149 has 2 divisors, whose sum is σ = 170171150. Its totient is φ = 170171148.

The previous prime is 170171143. The next prime is 170171171. The reversal of 170171149 is 941171071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137475625 + 32695524 = 11725^2 + 5718^2 .

It is a cyclic number.

It is not a de Polignac number, because 170171149 - 2¹⁷ = 170040077 is a prime.

It is equal to p_9512185 and since 170171149 and 9512185 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170171149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170171143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85085574 + 85085575.

It is an arithmetic number, because the mean of its divisors is an integer number (85085575).

Almost surely, 2^170171149 is an apocalyptic number.

It is an amenable number.

170171149 is a deficient number, since it is larger than the sum of its proper divisors (1).

170171149 is an equidigital number, since it uses as much as digits as its factorization.

170171149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 31.

The square root of 170171149 is about 13044.9664238740. The cubic root of 170171149 is about 554.1516666514.

The spelling of 170171149 in words is "one hundred seventy million, one hundred seventy-one thousand, one hundred forty-nine".