227855681 has 2 divisors, whose sum is σ = 227855682. Its totient is φ = 227855680.

The previous prime is 227855623. The next prime is 227855689. The reversal of 227855681 is 186558722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165997456 + 61858225 = 12884^2 + 7865^2 .

It is a cyclic number.

It is not a de Polignac number, because 227855681 - 2¹⁰ = 227854657 is a prime.

It is a super-2 number, since 2×227855681² = 103836422727947522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (227855689) 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, 113927840 + 113927841.

It is an arithmetic number, because the mean of its divisors is an integer number (113927841).

Almost surely, 2^227855681 is an apocalyptic number.

It is an amenable number.

227855681 is a deficient number, since it is larger than the sum of its proper divisors (1).

227855681 is an equidigital number, since it uses as much as digits as its factorization.

227855681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 44.

The square root of 227855681 is about 15094.8892344396. The cubic root of 227855681 is about 610.7825493675.

The spelling of 227855681 in words is "two hundred twenty-seven million, eight hundred fifty-five thousand, six hundred eighty-one".