520822 has 4 divisors (see below), whose sum is σ = 781236. Its totient is φ = 260410.

The previous prime is 520813. The next prime is 520837. The reversal of 520822 is 228025.

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

It is a self number, because there is not a number n which added to its sum of digits gives 520822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130204 + ... + 130207.

It is an arithmetic number, because the mean of its divisors is an integer number (195309).

2⁵²⁰⁸²² is an apocalyptic number.

520822 is a deficient number, since it is larger than the sum of its proper divisors (260414).

520822 is a wasteful number, since it uses less digits than its factorization.

520822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260413.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 520822 is about 721.6799844807. The cubic root of 520822 is about 80.4568651282.

Adding to 520822 its reverse (228025), we get a palindrome (748847).

The spelling of 520822 in words is "five hundred twenty thousand, eight hundred twenty-two".