573997409 has 2 divisors, whose sum is σ = 573997410. Its totient is φ = 573997408.

The previous prime is 573997397. The next prime is 573997423. The reversal of 573997409 is 904799375.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495285025 + 78712384 = 22255^2 + 8872^2 .

It is a cyclic number.

It is not a de Polignac number, because 573997409 - 2⁴ = 573997393 is a prime.

It is not a weakly prime, because it can be changed into another prime (573997309) 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 as a sum of consecutive naturals, namely, 286998704 + 286998705.

It is an arithmetic number, because the mean of its divisors is an integer number (286998705).

Almost surely, 2^573997409 is an apocalyptic number.

It is an amenable number.

573997409 is a deficient number, since it is larger than the sum of its proper divisors (1).

573997409 is an equidigital number, since it uses as much as digits as its factorization.

573997409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The square root of 573997409 is about 23958.2430282356. The cubic root of 573997409 is about 831.0681602435.

The spelling of 573997409 in words is "five hundred seventy-three million, nine hundred ninety-seven thousand, four hundred nine".