227275861 has 2 divisors, whose sum is σ = 227275862. Its totient is φ = 227275860.

The previous prime is 227275843. The next prime is 227275913. The reversal of 227275861 is 168572722.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203946961 + 23328900 = 14281^2 + 4830^2 .

It is a cyclic number.

It is not a de Polignac number, because 227275861 - 2⁷ = 227275733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227275831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113637930 + 113637931.

It is an arithmetic number, because the mean of its divisors is an integer number (113637931).

Almost surely, 2^227275861 is an apocalyptic number.

It is an amenable number.

227275861 is a deficient number, since it is larger than the sum of its proper divisors (1).

227275861 is an equidigital number, since it uses as much as digits as its factorization.

227275861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 227275861 is about 15075.6711625055. The cubic root of 227275861 is about 610.2640270642.

The spelling of 227275861 in words is "two hundred twenty-seven million, two hundred seventy-five thousand, eight hundred sixty-one".