573206981 has 2 divisors, whose sum is σ = 573206982. Its totient is φ = 573206980.

The previous prime is 573206917. The next prime is 573207049. The reversal of 573206981 is 189602375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555356356 + 17850625 = 23566^2 + 4225^2 .

It is a cyclic number.

It is not a de Polignac number, because 573206981 - 2⁶ = 573206917 is a prime.

It is a super-2 number, since 2×573206981² = 657132486134268722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (573206681) 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, 286603490 + 286603491.

It is an arithmetic number, because the mean of its divisors is an integer number (286603491).

Almost surely, 2^573206981 is an apocalyptic number.

It is an amenable number.

573206981 is a deficient number, since it is larger than the sum of its proper divisors (1).

573206981 is an equidigital number, since it uses as much as digits as its factorization.

573206981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 573206981 is about 23941.7413944767. The cubic root of 573206981 is about 830.6865085182.

The spelling of 573206981 in words is "five hundred seventy-three million, two hundred six thousand, nine hundred eighty-one".