172095997 has 2 divisors, whose sum is σ = 172095998. Its totient is φ = 172095996.

The previous prime is 172095971. The next prime is 172096003. The reversal of 172095997 is 799590271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147355321 + 24740676 = 12139^2 + 4974^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172095997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172095997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172095197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86047998 + 86047999.

It is an arithmetic number, because the mean of its divisors is an integer number (86047999).

Almost surely, 2^172095997 is an apocalyptic number.

It is an amenable number.

172095997 is a deficient number, since it is larger than the sum of its proper divisors (1).

172095997 is an equidigital number, since it uses as much as digits as its factorization.

172095997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 357210, while the sum is 49.

The square root of 172095997 is about 13118.5363893995. The cubic root of 172095997 is about 556.2332201814.

The spelling of 172095997 in words is "one hundred seventy-two million, ninety-five thousand, nine hundred ninety-seven".