2256217 has 2 divisors, whose sum is σ = 2256218. Its totient is φ = 2256216.

The previous prime is 2256197. The next prime is 2256227. The reversal of 2256217 is 7126522.

2256217 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., 2247001 + 9216 = 1499^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256217 - 2¹⁵ = 2223449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2256191 and 2256200.

It is not a weakly prime, because it can be changed into another prime (2256227) 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, 1128108 + 1128109.

It is an arithmetic number, because the mean of its divisors is an integer number (1128109).

2^2256217 is an apocalyptic number.

It is an amenable number.

2256217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256217 is an equidigital number, since it uses as much as digits as its factorization.

2256217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 2256217 is about 1502.0709037858. The cubic root of 2256217 is about 131.1576487152.

The spelling of 2256217 in words is "two million, two hundred fifty-six thousand, two hundred seventeen".