197197801 has 2 divisors, whose sum is σ = 197197802. Its totient is φ = 197197800.

The previous prime is 197197783. The next prime is 197197843. The reversal of 197197801 is 108791791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160909225 + 36288576 = 12685^2 + 6024^2 .

It is a cyclic number.

It is not a de Polignac number, because 197197801 - 2¹¹ = 197195753 is a prime.

It is not a weakly prime, because it can be changed into another prime (197597801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98598900 + 98598901.

It is an arithmetic number, because the mean of its divisors is an integer number (98598901).

Almost surely, 2^197197801 is an apocalyptic number.

It is an amenable number.

197197801 is a deficient number, since it is larger than the sum of its proper divisors (1).

197197801 is an equidigital number, since it uses as much as digits as its factorization.

197197801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 43.

The square root of 197197801 is about 14042.7134486181. The cubic root of 197197801 is about 582.0594651553.

The spelling of 197197801 in words is "one hundred ninety-seven million, one hundred ninety-seven thousand, eight hundred one".