5781613 has 2 divisors, whose sum is σ = 5781614. Its totient is φ = 5781612.

The previous prime is 5781599. The next prime is 5781623. The reversal of 5781613 is 3161875.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5442889 + 338724 = 2333^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 5781613 - 2⁹ = 5781101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5781623) 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, 2890806 + 2890807.

It is an arithmetic number, because the mean of its divisors is an integer number (2890807).

Almost surely, 2^5781613 is an apocalyptic number.

It is an amenable number.

5781613 is a deficient number, since it is larger than the sum of its proper divisors (1).

5781613 is an equidigital number, since it uses as much as digits as its factorization.

5781613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 5781613 is about 2404.4984924096. The cubic root of 5781613 is about 179.4801151148.

The spelling of 5781613 in words is "five million, seven hundred eighty-one thousand, six hundred thirteen".