224568857 has 2 divisors, whose sum is σ = 224568858. Its totient is φ = 224568856.

The previous prime is 224568853. The next prime is 224568859. The reversal of 224568857 is 758865422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200958976 + 23609881 = 14176^2 + 4859^2 .

It is a cyclic number.

It is not a de Polignac number, because 224568857 - 2² = 224568853 is a prime.

Together with 224568859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224568853) 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, 112284428 + 112284429.

It is an arithmetic number, because the mean of its divisors is an integer number (112284429).

Almost surely, 2^224568857 is an apocalyptic number.

It is an amenable number.

224568857 is a deficient number, since it is larger than the sum of its proper divisors (1).

224568857 is an equidigital number, since it uses as much as digits as its factorization.

224568857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1075200, while the sum is 47.

The square root of 224568857 is about 14985.6216754594. The cubic root of 224568857 is about 607.8314624400.

It can be divided in two parts, 22456 and 8857, that added together give a palindrome (31313).

The spelling of 224568857 in words is "two hundred twenty-four million, five hundred sixty-eight thousand, eight hundred fifty-seven".