515115047 has 2 divisors, whose sum is σ = 515115048. Its totient is φ = 515115046.

The previous prime is 515115031. The next prime is 515115071. The reversal of 515115047 is 740511515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 515115047 - 2⁴ = 515115031 is a prime.

It is equal to p_27108830 and since 515115047 and 27108830 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515115077) 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, 257557523 + 257557524.

It is an arithmetic number, because the mean of its divisors is an integer number (257557524).

Almost surely, 2^515115047 is an apocalyptic number.

515115047 is a deficient number, since it is larger than the sum of its proper divisors (1).

515115047 is an equidigital number, since it uses as much as digits as its factorization.

515115047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 29.

The square root of 515115047 is about 22696.1460825401. The cubic root of 515115047 is about 801.6191410794.

The spelling of 515115047 in words is "five hundred fifteen million, one hundred fifteen thousand, forty-seven".