587381 has 2 divisors, whose sum is σ = 587382. Its totient is φ = 587380.

The previous prime is 587371. The next prime is 587387. The reversal of 587381 is 183785.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 586756 + 625 = 766^2 + 25^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-587381 is a prime.

It is a super-2 number, since 2×587381² = 690032878322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 587381.

It is not a weakly prime, because it can be changed into another prime (587387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 293690 + 293691.

It is an arithmetic number, because the mean of its divisors is an integer number (293691).

2⁵⁸⁷³⁸¹ is an apocalyptic number.

It is an amenable number.

587381 is a deficient number, since it is larger than the sum of its proper divisors (1).

587381 is an equidigital number, since it uses as much as digits as its factorization.

587381 is an evil number, because the sum of its binary digits is even.

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

The square root of 587381 is about 766.4078548658. The cubic root of 587381 is about 83.7477789565.

The spelling of 587381 in words is "five hundred eighty-seven thousand, three hundred eighty-one".