506042609 has 2 divisors, whose sum is σ = 506042610. Its totient is φ = 506042608.

The previous prime is 506042567. The next prime is 506042627. The reversal of 506042609 is 906240605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273571600 + 232471009 = 16540^2 + 15247^2 .

It is a cyclic number.

It is not a de Polignac number, because 506042609 - 2⁸ = 506042353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (506042659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253021304 + 253021305.

It is an arithmetic number, because the mean of its divisors is an integer number (253021305).

Almost surely, 2^506042609 is an apocalyptic number.

It is an amenable number.

506042609 is a deficient number, since it is larger than the sum of its proper divisors (1).

506042609 is an equidigital number, since it uses as much as digits as its factorization.

506042609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 506042609 is about 22495.3908390141. The cubic root of 506042609 is about 796.8850795167.

The spelling of 506042609 in words is "five hundred six million, forty-two thousand, six hundred nine".