171079973 has 2 divisors, whose sum is σ = 171079974. Its totient is φ = 171079972.

The previous prime is 171079943. The next prime is 171079981. The reversal of 171079973 is 379970171.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161239204 + 9840769 = 12698^2 + 3137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171079973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171079943) 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, 85539986 + 85539987.

It is an arithmetic number, because the mean of its divisors is an integer number (85539987).

Almost surely, 2^171079973 is an apocalyptic number.

It is an amenable number.

171079973 is a deficient number, since it is larger than the sum of its proper divisors (1).

171079973 is an equidigital number, since it uses as much as digits as its factorization.

171079973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83349, while the sum is 44.

The square root of 171079973 is about 13079.7543172645. The cubic root of 171079973 is about 555.1364250833.

The spelling of 171079973 in words is "one hundred seventy-one million, seventy-nine thousand, nine hundred seventy-three".