587481721 has 2 divisors, whose sum is σ = 587481722. Its totient is φ = 587481720.

The previous prime is 587481679. The next prime is 587481731. The reversal of 587481721 is 127184785.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581774400 + 5707321 = 24120^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 587481721 - 2²⁹ = 50610809 is a prime.

It is not a weakly prime, because it can be changed into another prime (587481731) 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, 293740860 + 293740861.

It is an arithmetic number, because the mean of its divisors is an integer number (293740861).

Almost surely, 2^587481721 is an apocalyptic number.

It is an amenable number.

587481721 is a deficient number, since it is larger than the sum of its proper divisors (1).

587481721 is an equidigital number, since it uses as much as digits as its factorization.

587481721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125440, while the sum is 43.

The square root of 587481721 is about 24238.0222171695. The cubic root of 587481721 is about 837.5256555889.

The spelling of 587481721 in words is "five hundred eighty-seven million, four hundred eighty-one thousand, seven hundred twenty-one".