197255089 has 2 divisors, whose sum is σ = 197255090. Its totient is φ = 197255088.

The previous prime is 197255083. The next prime is 197255101. The reversal of 197255089 is 980552791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185640625 + 11614464 = 13625^2 + 3408^2 .

It is a cyclic number.

It is not a de Polignac number, because 197255089 - 2³ = 197255081 is a prime.

It is not a weakly prime, because it can be changed into another prime (197255081) 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, 98627544 + 98627545.

It is an arithmetic number, because the mean of its divisors is an integer number (98627545).

Almost surely, 2^197255089 is an apocalyptic number.

It is an amenable number.

197255089 is a deficient number, since it is larger than the sum of its proper divisors (1).

197255089 is an equidigital number, since it uses as much as digits as its factorization.

197255089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 197255089 is about 14044.7530772171. The cubic root of 197255089 is about 582.1158244621.

The spelling of 197255089 in words is "one hundred ninety-seven million, two hundred fifty-five thousand, eighty-nine".