515108423 has 2 divisors, whose sum is σ = 515108424. Its totient is φ = 515108422.

The previous prime is 515108401. The next prime is 515108467. The reversal of 515108423 is 324801515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 515108423 - 2⁶ = 515108359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515108123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257554211 + 257554212.

It is an arithmetic number, because the mean of its divisors is an integer number (257554212).

Almost surely, 2^515108423 is an apocalyptic number.

515108423 is a deficient number, since it is larger than the sum of its proper divisors (1).

515108423 is an equidigital number, since it uses as much as digits as its factorization.

515108423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 515108423 is about 22696.0001542122. Note that the first 3 decimals coincide. The cubic root of 515108423 is about 801.6157049875.

Adding to 515108423 its reverse (324801515), we get a palindrome (839909938).

The spelling of 515108423 in words is "five hundred fifteen million, one hundred eight thousand, four hundred twenty-three".