520787819 has 2 divisors, whose sum is σ = 520787820. Its totient is φ = 520787818.

The previous prime is 520787807. The next prime is 520787831. The reversal of 520787819 is 918787025.

It is a balanced prime because it is at equal distance from previous prime (520787807) and next prime (520787831).

It is a cyclic number.

It is not a de Polignac number, because 520787819 - 2⁴ = 520787803 is a prime.

It is a super-2 number, since 2×520787819² = 542439904837553522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520787419) 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, 260393909 + 260393910.

It is an arithmetic number, because the mean of its divisors is an integer number (260393910).

Almost surely, 2^520787819 is an apocalyptic number.

520787819 is a deficient number, since it is larger than the sum of its proper divisors (1).

520787819 is an equidigital number, since it uses as much as digits as its factorization.

520787819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 520787819 is about 22820.7760385137. The cubic root of 520787819 is about 804.5510498989.

The spelling of 520787819 in words is "five hundred twenty million, seven hundred eighty-seven thousand, eight hundred nineteen".