520919 has 6 divisors (see below), whose sum is σ = 606024. Its totient is φ = 446460.

The previous prime is 520913. The next prime is 520921. The reversal of 520919 is 919025.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-520919 is a prime.

It is a super-2 number, since 2×520919² = 542713209122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5267 + ... + 5364.

It is an arithmetic number, because the mean of its divisors is an integer number (101004).

2⁵²⁰⁹¹⁹ is an apocalyptic number.

520919 is a deficient number, since it is larger than the sum of its proper divisors (85105).

520919 is a wasteful number, since it uses less digits than its factorization.

520919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10645 (or 10638 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 520919 is about 721.7471856544. The cubic root of 520919 is about 80.4618596890.

The spelling of 520919 in words is "five hundred twenty thousand, nine hundred nineteen".