227387161 has 2 divisors, whose sum is σ = 227387162. Its totient is φ = 227387160.

The previous prime is 227387159. The next prime is 227387191. The reversal of 227387161 is 161783722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210830400 + 16556761 = 14520^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 227387161 - 2¹ = 227387159 is a prime.

Together with 227387159, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 227387161.

It is not a weakly prime, because it can be changed into another prime (227387191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113693580 + 113693581.

It is an arithmetic number, because the mean of its divisors is an integer number (113693581).

Almost surely, 2^227387161 is an apocalyptic number.

It is an amenable number.

227387161 is a deficient number, since it is larger than the sum of its proper divisors (1).

227387161 is an equidigital number, since it uses as much as digits as its factorization.

227387161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 227387161 is about 15079.3620886296. The cubic root of 227387161 is about 610.3636289334.

The spelling of 227387161 in words is "two hundred twenty-seven million, three hundred eighty-seven thousand, one hundred sixty-one".