581873 has 2 divisors, whose sum is σ = 581874. Its totient is φ = 581872.

The previous prime is 581869. The next prime is 581891. The reversal of 581873 is 378185.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394384 + 187489 = 628^2 + 433^2 .

It is a cyclic number.

It is not a de Polignac number, because 581873 - 2² = 581869 is a prime.

It is not a weakly prime, because it can be changed into another prime (581843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290936 + 290937.

It is an arithmetic number, because the mean of its divisors is an integer number (290937).

2⁵⁸¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

581873 is a deficient number, since it is larger than the sum of its proper divisors (1).

581873 is an equidigital number, since it uses as much as digits as its factorization.

581873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 581873 is about 762.8060041714. The cubic root of 581873 is about 83.4851826888.

The spelling of 581873 in words is "five hundred eighty-one thousand, eight hundred seventy-three".