227561899 has 2 divisors, whose sum is σ = 227561900. Its totient is φ = 227561898.

The previous prime is 227561857. The next prime is 227561909. The reversal of 227561899 is 998165722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 227561899 - 2⁷ = 227561771 is a prime.

It is not a weakly prime, because it can be changed into another prime (227562899) 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, 113780949 + 113780950.

It is an arithmetic number, because the mean of its divisors is an integer number (113780950).

Almost surely, 2^227561899 is an apocalyptic number.

227561899 is a deficient number, since it is larger than the sum of its proper divisors (1).

227561899 is an equidigital number, since it uses as much as digits as its factorization.

227561899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 227561899 is about 15085.1549213125. The cubic root of 227561899 is about 610.5199356355.

The spelling of 227561899 in words is "two hundred twenty-seven million, five hundred sixty-one thousand, eight hundred ninety-nine".