171330949 has 2 divisors, whose sum is σ = 171330950. Its totient is φ = 171330948.

The previous prime is 171330941. The next prime is 171330953. The reversal of 171330949 is 949033171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156700324 + 14630625 = 12518^2 + 3825^2 .

It is an emirp because it is prime and its reverse (949033171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171330949 - 2³ = 171330941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171330941) 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, 85665474 + 85665475.

It is an arithmetic number, because the mean of its divisors is an integer number (85665475).

Almost surely, 2^171330949 is an apocalyptic number.

It is an amenable number.

171330949 is a deficient number, since it is larger than the sum of its proper divisors (1).

171330949 is an equidigital number, since it uses as much as digits as its factorization.

171330949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 171330949 is about 13089.3448651947. The cubic root of 171330949 is about 555.4077559734.

The spelling of 171330949 in words is "one hundred seventy-one million, three hundred thirty thousand, nine hundred forty-nine".