227809157 has 2 divisors, whose sum is σ = 227809158. Its totient is φ = 227809156.

The previous prime is 227809147. The next prime is 227809159. The reversal of 227809157 is 751908722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202749121 + 25060036 = 14239^2 + 5006^2 .

It is a cyclic number.

It is not a de Polignac number, because 227809157 - 2⁶ = 227809093 is a prime.

Together with 227809159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227809159) 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, 113904578 + 113904579.

It is an arithmetic number, because the mean of its divisors is an integer number (113904579).

Almost surely, 2^227809157 is an apocalyptic number.

It is an amenable number.

227809157 is a deficient number, since it is larger than the sum of its proper divisors (1).

227809157 is an equidigital number, since it uses as much as digits as its factorization.

227809157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 227809157 is about 15093.3481043803. The cubic root of 227809157 is about 610.7409762960.

The spelling of 227809157 in words is "two hundred twenty-seven million, eight hundred nine thousand, one hundred fifty-seven".