520531019 has 2 divisors, whose sum is σ = 520531020. Its totient is φ = 520531018.

The previous prime is 520531001. The next prime is 520531021. The reversal of 520531019 is 910135025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520531019 - 2²⁸ = 252095563 is a prime.

It is a super-2 number, since 2×520531019² = 541905083482356722, which contains 22 as substring.

Together with 520531021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520531919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260265509 + 260265510.

It is an arithmetic number, because the mean of its divisors is an integer number (260265510).

Almost surely, 2^520531019 is an apocalyptic number.

520531019 is a deficient number, since it is larger than the sum of its proper divisors (1).

520531019 is an equidigital number, since it uses as much as digits as its factorization.

520531019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 520531019 is about 22815.1488927861. The cubic root of 520531019 is about 804.4187870266.

The spelling of 520531019 in words is "five hundred twenty million, five hundred thirty-one thousand, nineteen".