2056517 has 2 divisors, whose sum is σ = 2056518. Its totient is φ = 2056516.

The previous prime is 2056501. The next prime is 2056547. The reversal of 2056517 is 7156502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 57121 = 1414^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056517 - 2⁴ = 2056501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056547) 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, 1028258 + 1028259.

It is an arithmetic number, because the mean of its divisors is an integer number (1028259).

2^2056517 is an apocalyptic number.

It is an amenable number.

2056517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056517 is an equidigital number, since it uses as much as digits as its factorization.

2056517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2056517 is about 1434.0561355819. The cubic root of 2056517 is about 127.1678809836.

The spelling of 2056517 in words is "two million, fifty-six thousand, five hundred seventeen".