197071601 has 2 divisors, whose sum is σ = 197071602. Its totient is φ = 197071600.

The previous prime is 197071597. The next prime is 197071607. The reversal of 197071601 is 106170791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185613376 + 11458225 = 13624^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 197071601 - 2² = 197071597 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197071607) 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, 98535800 + 98535801.

It is an arithmetic number, because the mean of its divisors is an integer number (98535801).

Almost surely, 2^197071601 is an apocalyptic number.

It is an amenable number.

197071601 is a deficient number, since it is larger than the sum of its proper divisors (1).

197071601 is an equidigital number, since it uses as much as digits as its factorization.

197071601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 197071601 is about 14038.2192959079. The cubic root of 197071601 is about 581.9352724589.

The spelling of 197071601 in words is "one hundred ninety-seven million, seventy-one thousand, six hundred one".