197001971 has 2 divisors, whose sum is σ = 197001972. Its totient is φ = 197001970.

The previous prime is 197001953. The next prime is 197001977. The reversal of 197001971 is 179100791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197001971 - 2⁶ = 197001907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197001977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98500985 + 98500986.

It is an arithmetic number, because the mean of its divisors is an integer number (98500986).

Almost surely, 2^197001971 is an apocalyptic number.

197001971 is a deficient number, since it is larger than the sum of its proper divisors (1).

197001971 is an equidigital number, since it uses as much as digits as its factorization.

197001971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 197001971 is about 14035.7390614103. The cubic root of 197001971 is about 581.8667272771.

The spelling of 197001971 in words is "one hundred ninety-seven million, one thousand, nine hundred seventy-one".