520779503 has 2 divisors, whose sum is σ = 520779504. Its totient is φ = 520779502.

The previous prime is 520779491. The next prime is 520779529. The reversal of 520779503 is 305977025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520779503 - 2¹⁸ = 520517359 is a prime.

It is a super-2 number, since 2×520779503² = 542422581489854018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520779563) 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, 260389751 + 260389752.

It is an arithmetic number, because the mean of its divisors is an integer number (260389752).

Almost surely, 2^520779503 is an apocalyptic number.

520779503 is a deficient number, since it is larger than the sum of its proper divisors (1).

520779503 is an equidigital number, since it uses as much as digits as its factorization.

520779503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 520779503 is about 22820.5938353935. The cubic root of 520779503 is about 804.5467674881.

The spelling of 520779503 in words is "five hundred twenty million, seven hundred seventy-nine thousand, five hundred three".