520419 has 4 divisors (see below), whose sum is σ = 693896. Its totient is φ = 346944.

The previous prime is 520411. The next prime is 520423. The reversal of 520419 is 914025.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 520419 - 2³ = 520411 is a prime.

It is a super-2 number, since 2×520419² = 541671871122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 520395 and 520404.

It is not an unprimeable number, because it can be changed into a prime (520411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86734 + ... + 86739.

It is an arithmetic number, because the mean of its divisors is an integer number (173474).

2⁵²⁰⁴¹⁹ is an apocalyptic number.

520419 is a deficient number, since it is larger than the sum of its proper divisors (173477).

520419 is a wasteful number, since it uses less digits than its factorization.

520419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173476.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 520419 is about 721.4007208203. The cubic root of 520419 is about 80.4361078872.

It can be divided in two parts, 520 and 419, that added together give a palindrome (939).

The spelling of 520419 in words is "five hundred twenty thousand, four hundred nineteen".