572664409 has 2 divisors, whose sum is σ = 572664410. Its totient is φ = 572664408.

The previous prime is 572664377. The next prime is 572664439. The reversal of 572664409 is 904466275.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440874009 + 131790400 = 20997^2 + 11480^2 .

It is a cyclic number.

It is not a de Polignac number, because 572664409 - 2⁵ = 572664377 is a prime.

It is not a weakly prime, because it can be changed into another prime (572664439) 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, 286332204 + 286332205.

It is an arithmetic number, because the mean of its divisors is an integer number (286332205).

Almost surely, 2^572664409 is an apocalyptic number.

It is an amenable number.

572664409 is a deficient number, since it is larger than the sum of its proper divisors (1).

572664409 is an equidigital number, since it uses as much as digits as its factorization.

572664409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 572664409 is about 23930.4076229386. The cubic root of 572664409 is about 830.4243289237.

The spelling of 572664409 in words is "five hundred seventy-two million, six hundred sixty-four thousand, four hundred nine".