171984097 has 2 divisors, whose sum is σ = 171984098. Its totient is φ = 171984096.

The previous prime is 171984089. The next prime is 171984151. The reversal of 171984097 is 790489171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144985681 + 26998416 = 12041^2 + 5196^2 .

It is a cyclic number.

It is not a de Polignac number, because 171984097 - 2³ = 171984089 is a prime.

It is not a weakly prime, because it can be changed into another prime (171984077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85992048 + 85992049.

It is an arithmetic number, because the mean of its divisors is an integer number (85992049).

Almost surely, 2^171984097 is an apocalyptic number.

It is an amenable number.

171984097 is a deficient number, since it is larger than the sum of its proper divisors (1).

171984097 is an equidigital number, since it uses as much as digits as its factorization.

171984097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 171984097 is about 13114.2707383979. The cubic root of 171984097 is about 556.1126363335.

The spelling of 171984097 in words is "one hundred seventy-one million, nine hundred eighty-four thousand, ninety-seven".