520019 has 2 divisors, whose sum is σ = 520020. Its totient is φ = 520018.

The previous prime is 519997. The next prime is 520021. The reversal of 520019 is 910025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520019 - 2¹² = 515923 is a prime.

It is a super-2 number, since 2×520019² = 540839520722, which contains 22 as substring.

Together with 520021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 519979 and 520006.

It is not a weakly prime, because it can be changed into another prime (220019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260009 + 260010.

It is an arithmetic number, because the mean of its divisors is an integer number (260010).

2⁵²⁰⁰¹⁹ is an apocalyptic number.

520019 is a deficient number, since it is larger than the sum of its proper divisors (1).

520019 is an equidigital number, since it uses as much as digits as its factorization.

520019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 520019 is about 721.1234291021. The cubic root of 520019 is about 80.4154945674.

The spelling of 520019 in words is "five hundred twenty thousand, nineteen".