581369 has 2 divisors, whose sum is σ = 581370. Its totient is φ = 581368.

The previous prime is 581353. The next prime is 581377. The reversal of 581369 is 963185.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319225 + 262144 = 565^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 581369 - 2⁴ = 581353 is a prime.

It is a super-2 number, since 2×581369² = 675979828322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (581069) 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, 290684 + 290685.

It is an arithmetic number, because the mean of its divisors is an integer number (290685).

2⁵⁸¹³⁶⁹ is an apocalyptic number.

It is an amenable number.

581369 is a deficient number, since it is larger than the sum of its proper divisors (1).

581369 is an equidigital number, since it uses as much as digits as its factorization.

581369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 581369 is about 762.4755733792. The cubic root of 581369 is about 83.4610716506.

The spelling of 581369 in words is "five hundred eighty-one thousand, three hundred sixty-nine".