227915081 has 2 divisors, whose sum is σ = 227915082. Its totient is φ = 227915080.

The previous prime is 227915071. The next prime is 227915101. The reversal of 227915081 is 180519722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226201600 + 1713481 = 15040^2 + 1309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227915081 is a prime.

It is a super-2 number, since 2×227915081² = 103890568294473122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (227915071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113957540 + 113957541.

It is an arithmetic number, because the mean of its divisors is an integer number (113957541).

Almost surely, 2^227915081 is an apocalyptic number.

It is an amenable number.

227915081 is a deficient number, since it is larger than the sum of its proper divisors (1).

227915081 is an equidigital number, since it uses as much as digits as its factorization.

227915081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 227915081 is about 15096.8566595831. The cubic root of 227915081 is about 610.8356199940.

It can be divided in two parts, 22791 and 5081, that added together give a palindrome (27872).

The spelling of 227915081 in words is "two hundred twenty-seven million, nine hundred fifteen thousand, eighty-one".