222857 has 2 divisors, whose sum is σ = 222858. Its totient is φ = 222856.

The previous prime is 222841. The next prime is 222863. The reversal of 222857 is 758222.

222857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190096 + 32761 = 436^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 222857 - 2⁴ = 222841 is a prime.

It is equal to p₁₉₈₄₄ and since 222857 and 19844 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 16.

It is a nialpdrome in base 8.

It is not a weakly prime, because it can be changed into another prime (222877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111428 + 111429.

It is an arithmetic number, because the mean of its divisors is an integer number (111429).

2²²²⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

222857 is a deficient number, since it is larger than the sum of its proper divisors (1).

222857 is an equidigital number, since it uses as much as digits as its factorization.

222857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 26.

The square root of 222857 is about 472.0773241748. The cubic root of 222857 is about 60.6283049886.

The spelling of 222857 in words is "two hundred twenty-two thousand, eight hundred fifty-seven".