515351423 has 2 divisors, whose sum is σ = 515351424. Its totient is φ = 515351422.

The previous prime is 515351411. The next prime is 515351449. The reversal of 515351423 is 324153515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 515351423 - 2⁸ = 515351167 is a prime.

It is a Sophie Germain prime.

It is equal to p_27120665 and since 515351423 and 27120665 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 (515351623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257675711 + 257675712.

It is an arithmetic number, because the mean of its divisors is an integer number (257675712).

Almost surely, 2^515351423 is an apocalyptic number.

515351423 is a deficient number, since it is larger than the sum of its proper divisors (1).

515351423 is an equidigital number, since it uses as much as digits as its factorization.

515351423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 29.

The square root of 515351423 is about 22701.3528892002. The cubic root of 515351423 is about 801.7417379964.

The spelling of 515351423 in words is "five hundred fifteen million, three hundred fifty-one thousand, four hundred twenty-three".