573397021 has 2 divisors, whose sum is σ = 573397022. Its totient is φ = 573397020.

The previous prime is 573397003. The next prime is 573397031. The reversal of 573397021 is 120793375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335805625 + 237591396 = 18325^2 + 15414^2 .

It is a cyclic number.

It is not a de Polignac number, because 573397021 - 2¹¹ = 573394973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (573397031) 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, 286698510 + 286698511.

It is an arithmetic number, because the mean of its divisors is an integer number (286698511).

Almost surely, 2^573397021 is an apocalyptic number.

It is an amenable number.

573397021 is a deficient number, since it is larger than the sum of its proper divisors (1).

573397021 is an equidigital number, since it uses as much as digits as its factorization.

573397021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 573397021 is about 23945.7098662788. The cubic root of 573397021 is about 830.7782998063.

The spelling of 573397021 in words is "five hundred seventy-three million, three hundred ninety-seven thousand, twenty-one".