197117 has 2 divisors, whose sum is σ = 197118. Its totient is φ = 197116.

The previous prime is 197101. The next prime is 197123. The reversal of 197117 is 711791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151321 + 45796 = 389^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 197117 - 2⁴ = 197101 is a prime.

It is a super-2 number, since 2×197117² = 77710223378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98558 + 98559.

It is an arithmetic number, because the mean of its divisors is an integer number (98559).

2¹⁹⁷¹¹⁷ is an apocalyptic number.

It is an amenable number.

197117 is a deficient number, since it is larger than the sum of its proper divisors (1).

197117 is an equidigital number, since it uses as much as digits as its factorization.

197117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 441, while the sum is 26.

The square root of 197117 is about 443.9786030880. The cubic root of 197117 is about 58.1979955459.

The spelling of 197117 in words is "one hundred ninety-seven thousand, one hundred seventeen".