227542681 has 2 divisors, whose sum is σ = 227542682. Its totient is φ = 227542680.

The previous prime is 227542663. The next prime is 227542687. The reversal of 227542681 is 186245722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227527056 + 15625 = 15084^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 227542681 - 2¹⁵ = 227509913 is a prime.

It is a super-2 number, since 2×227542681² = 103551343353335522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 227542681.

It is not a weakly prime, because it can be changed into another prime (227542687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113771340 + 113771341.

It is an arithmetic number, because the mean of its divisors is an integer number (113771341).

Almost surely, 2^227542681 is an apocalyptic number.

It is an amenable number.

227542681 is a deficient number, since it is larger than the sum of its proper divisors (1).

227542681 is an equidigital number, since it uses as much as digits as its factorization.

227542681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 227542681 is about 15084.5179240173. The cubic root of 227542681 is about 610.5027486599.

The spelling of 227542681 in words is "two hundred twenty-seven million, five hundred forty-two thousand, six hundred eighty-one".