173161897 has 2 divisors, whose sum is σ = 173161898. Its totient is φ = 173161896.

The previous prime is 173161889. The next prime is 173161907. The reversal of 173161897 is 798161371.

It is a happy number.

173161897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128686336 + 44475561 = 11344^2 + 6669^2 .

It is a cyclic number.

It is not a de Polignac number, because 173161897 - 2³ = 173161889 is a prime.

It is not a weakly prime, because it can be changed into another prime (173161837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86580948 + 86580949.

It is an arithmetic number, because the mean of its divisors is an integer number (86580949).

Almost surely, 2^173161897 is an apocalyptic number.

It is an amenable number.

173161897 is a deficient number, since it is larger than the sum of its proper divisors (1).

173161897 is an equidigital number, since it uses as much as digits as its factorization.

173161897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 43.

The square root of 173161897 is about 13159.0993992750. The cubic root of 173161897 is about 557.3792261858.

The spelling of 173161897 in words is "one hundred seventy-three million, one hundred sixty-one thousand, eight hundred ninety-seven".