57790813 has 2 divisors, whose sum is σ = 57790814. Its totient is φ = 57790812.

The previous prime is 57790801. The next prime is 57790841. The reversal of 57790813 is 31809775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34539129 + 23251684 = 5877^2 + 4822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57790813 is a prime.

It is equal to p_3438697 and since 57790813 and 3438697 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57790013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28895406 + 28895407.

It is an arithmetic number, because the mean of its divisors is an integer number (28895407).

Almost surely, 2^57790813 is an apocalyptic number.

It is an amenable number.

57790813 is a deficient number, since it is larger than the sum of its proper divisors (1).

57790813 is an equidigital number, since it uses as much as digits as its factorization.

57790813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 57790813 is about 7602.0269007680. The cubic root of 57790813 is about 386.6217373314.

The spelling of 57790813 in words is "fifty-seven million, seven hundred ninety thousand, eight hundred thirteen".