515066939 has 2 divisors, whose sum is σ = 515066940. Its totient is φ = 515066938.

The previous prime is 515066861. The next prime is 515066947. The reversal of 515066939 is 939660515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515066939 - 2⁸ = 515066683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 515066939.

It is not a weakly prime, because it can be changed into another prime (515066239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257533469 + 257533470.

It is an arithmetic number, because the mean of its divisors is an integer number (257533470).

Almost surely, 2^515066939 is an apocalyptic number.

515066939 is a deficient number, since it is larger than the sum of its proper divisors (1).

515066939 is an equidigital number, since it uses as much as digits as its factorization.

515066939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 515066939 is about 22695.0862302834. The cubic root of 515066939 is about 801.5941851694.

The spelling of 515066939 in words is "five hundred fifteen million, sixty-six thousand, nine hundred thirty-nine".