515013203 has 2 divisors, whose sum is σ = 515013204. Its totient is φ = 515013202.

The previous prime is 515013167. The next prime is 515013211. The reversal of 515013203 is 302310515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515013203 - 2⁶ = 515013139 is a prime.

It is not a weakly prime, because it can be changed into another prime (515013253) 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, 257506601 + 257506602.

It is an arithmetic number, because the mean of its divisors is an integer number (257506602).

Almost surely, 2^515013203 is an apocalyptic number.

515013203 is a deficient number, since it is larger than the sum of its proper divisors (1).

515013203 is an equidigital number, since it uses as much as digits as its factorization.

515013203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 515013203 is about 22693.9023308024. The cubic root of 515013203 is about 801.5663079105.

Adding to 515013203 its reverse (302310515), we get a palindrome (817323718).

The spelling of 515013203 in words is "five hundred fifteen million, thirteen thousand, two hundred three".