2857223 has 2 divisors, whose sum is σ = 2857224. Its totient is φ = 2857222.

The previous prime is 2857219. The next prime is 2857237. The reversal of 2857223 is 3227582.

2857223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2857223 - 2² = 2857219 is a prime.

It is a d-powerful number, because it can be written as 2¹⁸ + 8 + 5⁹ + 7⁶ + 2¹⁸ + 2¹⁸ + 3² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428611 + 1428612.

It is an arithmetic number, because the mean of its divisors is an integer number (1428612).

2^2857223 is an apocalyptic number.

2857223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857223 is an equidigital number, since it uses as much as digits as its factorization.

2857223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 2857223 is about 1690.3322158676. The cubic root of 2857223 is about 141.8996679341.

The spelling of 2857223 in words is "two million, eight hundred fifty-seven thousand, two hundred twenty-three".