197059871 has 2 divisors, whose sum is σ = 197059872. Its totient is φ = 197059870.

The previous prime is 197059831. The next prime is 197059897. The reversal of 197059871 is 178950791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197059871 - 2²⁶ = 129951007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197059831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98529935 + 98529936.

It is an arithmetic number, because the mean of its divisors is an integer number (98529936).

Almost surely, 2^197059871 is an apocalyptic number.

197059871 is a deficient number, since it is larger than the sum of its proper divisors (1).

197059871 is an equidigital number, since it uses as much as digits as its factorization.

197059871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 47.

The square root of 197059871 is about 14037.8015016597. The cubic root of 197059871 is about 581.9237263404.

The spelling of 197059871 in words is "one hundred ninety-seven million, fifty-nine thousand, eight hundred seventy-one".