227975197 has 2 divisors, whose sum is σ = 227975198. Its totient is φ = 227975196.

The previous prime is 227975179. The next prime is 227975203. The reversal of 227975197 is 791579722.

Together with previous prime (227975179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163558521 + 64416676 = 12789^2 + 8026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227975197 is a prime.

It is a Chen prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 227975197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227975497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113987598 + 113987599.

It is an arithmetic number, because the mean of its divisors is an integer number (113987599).

Almost surely, 2^227975197 is an apocalyptic number.

It is an amenable number.

227975197 is a deficient number, since it is larger than the sum of its proper divisors (1).

227975197 is an equidigital number, since it uses as much as digits as its factorization.

227975197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 227975197 is about 15098.8475388024. The cubic root of 227975197 is about 610.8893209395.

The spelling of 227975197 in words is "two hundred twenty-seven million, nine hundred seventy-five thousand, one hundred ninety-seven".