163175081 has 2 divisors, whose sum is σ = 163175082. Its totient is φ = 163175080.

The previous prime is 163175017. The next prime is 163175093. The reversal of 163175081 is 180571361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158357056 + 4818025 = 12584^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 163175081 - 2⁶ = 163175017 is a prime.

It is a super-2 number, since 2×163175081² = 53252214118713122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_9142349 and since 163175081 and 9142349 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (163175011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81587540 + 81587541.

It is an arithmetic number, because the mean of its divisors is an integer number (81587541).

Almost surely, 2^163175081 is an apocalyptic number.

It is an amenable number.

163175081 is a deficient number, since it is larger than the sum of its proper divisors (1).

163175081 is an equidigital number, since it uses as much as digits as its factorization.

163175081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 163175081 is about 12774.0001957100. Note that the first 3 decimals coincide. The cubic root of 163175081 is about 546.4510678585.

The spelling of 163175081 in words is "one hundred sixty-three million, one hundred seventy-five thousand, eighty-one".