520775 has 12 divisors (see below), whose sum is σ = 664392. Its totient is φ = 404640.

The previous prime is 520763. The next prime is 520787. The reversal of 520775 is 577025.

It is an interprime number because it is at equal distance from previous prime (520763) and next prime (520787).

It is not a de Polignac number, because 520775 - 2⁴ = 520759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644 + ... + 1206.

It is an arithmetic number, because the mean of its divisors is an integer number (55366).

2⁵²⁰⁷⁷⁵ is an apocalyptic number.

520775 is a deficient number, since it is larger than the sum of its proper divisors (143617).

520775 is a wasteful number, since it uses less digits than its factorization.

520775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 520775 is about 721.6474208365. The cubic root of 520775 is about 80.4544448602.

The spelling of 520775 in words is "five hundred twenty thousand, seven hundred seventy-five".