2057813 has 2 divisors, whose sum is σ = 2057814. Its totient is φ = 2057812.

The previous prime is 2057807. The next prime is 2057849. The reversal of 2057813 is 3187502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2010724 + 47089 = 1418^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057813 - 2¹⁸ = 1795669 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 (2057863) 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, 1028906 + 1028907.

It is an arithmetic number, because the mean of its divisors is an integer number (1028907).

2^2057813 is an apocalyptic number.

It is an amenable number.

2057813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057813 is an equidigital number, since it uses as much as digits as its factorization.

2057813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2057813 is about 1434.5079295703. The cubic root of 2057813 is about 127.1945887563.

The spelling of 2057813 in words is "two million, fifty-seven thousand, eight hundred thirteen".