581271641 has 2 divisors, whose sum is σ = 581271642. Its totient is φ = 581271640.

The previous prime is 581271611. The next prime is 581271671. The reversal of 581271641 is 146172185.

It is a balanced prime because it is at equal distance from previous prime (581271611) and next prime (581271671).

It can be written as a sum of positive squares in only one way, i.e., 367527241 + 213744400 = 19171^2 + 14620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-581271641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (581271601) 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, 290635820 + 290635821.

It is an arithmetic number, because the mean of its divisors is an integer number (290635821).

Almost surely, 2^581271641 is an apocalyptic number.

It is an amenable number.

581271641 is a deficient number, since it is larger than the sum of its proper divisors (1).

581271641 is an equidigital number, since it uses as much as digits as its factorization.

581271641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 35.

The square root of 581271641 is about 24109.5757117374. The cubic root of 581271641 is about 834.5641245243.

The spelling of 581271641 in words is "five hundred eighty-one million, two hundred seventy-one thousand, six hundred forty-one".