197228461 has 2 divisors, whose sum is σ = 197228462. Its totient is φ = 197228460.

The previous prime is 197228443. The next prime is 197228467. The reversal of 197228461 is 164822791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192793225 + 4435236 = 13885^2 + 2106^2 .

It is a cyclic number.

It is not a de Polignac number, because 197228461 - 2⁵ = 197228429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197228467) 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, 98614230 + 98614231.

It is an arithmetic number, because the mean of its divisors is an integer number (98614231).

Almost surely, 2^197228461 is an apocalyptic number.

It is an amenable number.

197228461 is a deficient number, since it is larger than the sum of its proper divisors (1).

197228461 is an equidigital number, since it uses as much as digits as its factorization.

197228461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 197228461 is about 14043.8050755484. The cubic root of 197228461 is about 582.0896294849.

The spelling of 197228461 in words is "one hundred ninety-seven million, two hundred twenty-eight thousand, four hundred sixty-one".