581479361 has 2 divisors, whose sum is σ = 581479362. Its totient is φ = 581479360.

The previous prime is 581479337. The next prime is 581479387. The reversal of 581479361 is 163974185.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508051600 + 73427761 = 22540^2 + 8569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-581479361 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (581479961) 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, 290739680 + 290739681.

It is an arithmetic number, because the mean of its divisors is an integer number (290739681).

Almost surely, 2^581479361 is an apocalyptic number.

It is an amenable number.

581479361 is a deficient number, since it is larger than the sum of its proper divisors (1).

581479361 is an equidigital number, since it uses as much as digits as its factorization.

581479361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 581479361 is about 24113.8831588776. The cubic root of 581479361 is about 834.6635244158.

The spelling of 581479361 in words is "five hundred eighty-one million, four hundred seventy-nine thousand, three hundred sixty-one".