573691081 has 2 divisors, whose sum is σ = 573691082. Its totient is φ = 573691080.

The previous prime is 573691049. The next prime is 573691141. The reversal of 573691081 is 180196375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539865225 + 33825856 = 23235^2 + 5816^2 .

It is a cyclic number.

It is not a de Polignac number, because 573691081 - 2⁵ = 573691049 is a prime.

It is a super-2 number, since 2×573691081² = 658242912837897122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (573601081) 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, 286845540 + 286845541.

It is an arithmetic number, because the mean of its divisors is an integer number (286845541).

Almost surely, 2^573691081 is an apocalyptic number.

It is an amenable number.

573691081 is a deficient number, since it is larger than the sum of its proper divisors (1).

573691081 is an equidigital number, since it uses as much as digits as its factorization.

573691081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 573691081 is about 23951.8492187973. The cubic root of 573691081 is about 830.9202938685.

The spelling of 573691081 in words is "five hundred seventy-three million, six hundred ninety-one thousand, eighty-one".