573281 has 4 divisors (see below), whose sum is σ = 580272. Its totient is φ = 566292.

The previous prime is 573277. The next prime is 573289. The reversal of 573281 is 182375.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 573281 - 2² = 573277 is a prime.

It is a super-2 number, since 2×573281² = 657302209922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 573281.

It is not an unprimeable number, because it can be changed into a prime (573289) 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 in 3 ways as a sum of consecutive naturals, for example, 3371 + ... + 3536.

It is an arithmetic number, because the mean of its divisors is an integer number (145068).

2⁵⁷³²⁸¹ is an apocalyptic number.

It is an amenable number.

573281 is a deficient number, since it is larger than the sum of its proper divisors (6991).

573281 is an equidigital number, since it uses as much as digits as its factorization.

573281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990.

The product of its digits is 1680, while the sum is 26.

The square root of 573281 is about 757.1532209533. The cubic root of 573281 is about 83.0722262874.

The spelling of 573281 in words is "five hundred seventy-three thousand, two hundred eighty-one".