197265217 has 2 divisors, whose sum is σ = 197265218. Its totient is φ = 197265216.

The previous prime is 197265191. The next prime is 197265253. The reversal of 197265217 is 712562791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184987201 + 12278016 = 13601^2 + 3504^2 .

It is a cyclic number.

It is not a de Polignac number, because 197265217 - 2²⁷ = 63047489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197265217.

It is not a weakly prime, because it can be changed into another prime (197265017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98632608 + 98632609.

It is an arithmetic number, because the mean of its divisors is an integer number (98632609).

Almost surely, 2^197265217 is an apocalyptic number.

It is an amenable number.

197265217 is a deficient number, since it is larger than the sum of its proper divisors (1).

197265217 is an equidigital number, since it uses as much as digits as its factorization.

197265217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 40.

The square root of 197265217 is about 14045.1136342858. The cubic root of 197265217 is about 582.1257871424.

The spelling of 197265217 in words is "one hundred ninety-seven million, two hundred sixty-five thousand, two hundred seventeen".