513065503 has 2 divisors, whose sum is σ = 513065504. Its totient is φ = 513065502.

The previous prime is 513065479. The next prime is 513065519. The reversal of 513065503 is 305560315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513065503 - 2⁵ = 513065471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513065563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256532751 + 256532752.

It is an arithmetic number, because the mean of its divisors is an integer number (256532752).

Almost surely, 2^513065503 is an apocalyptic number.

513065503 is a deficient number, since it is larger than the sum of its proper divisors (1).

513065503 is an equidigital number, since it uses as much as digits as its factorization.

513065503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 513065503 is about 22650.9492737059. The cubic root of 513065503 is about 800.5545649625.

The spelling of 513065503 in words is "five hundred thirteen million, sixty-five thousand, five hundred three".