520279 has 2 divisors, whose sum is σ = 520280. Its totient is φ = 520278.

The previous prime is 520241. The next prime is 520291. The reversal of 520279 is 972025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520279 - 2⁷ = 520151 is a prime.

It is a super-3 number, since 3×520279³ = 422503338761032917, which contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260139 + 260140.

It is an arithmetic number, because the mean of its divisors is an integer number (260140).

2⁵²⁰²⁷⁹ is an apocalyptic number.

520279 is a deficient number, since it is larger than the sum of its proper divisors (1).

520279 is an equidigital number, since it uses as much as digits as its factorization.

520279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 520279 is about 721.3036808446. The cubic root of 520279 is about 80.4288944272.

The spelling of 520279 in words is "five hundred twenty thousand, two hundred seventy-nine".