520221030 has 64 divisors (see below), whose sum is σ = 1440046080. Its totient is φ = 117811584.

The previous prime is 520221019. The next prime is 520221049. The reversal of 520221030 is 30122025.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11527 + ... + 34253.

It is an arithmetic number, because the mean of its divisors is an integer number (22500720).

Almost surely, 2^520221030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520221030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720023040).

520221030 is an abundant number, since it is smaller than the sum of its proper divisors (919825050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520221030 is a wasteful number, since it uses less digits than its factorization.

520221030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22853.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 520221030 is about 22808.3543904421. The cubic root of 520221030 is about 804.2590716060.

Adding to 520221030 its reverse (30122025), we get a palindrome (550343055).

The spelling of 520221030 in words is "five hundred twenty million, two hundred twenty-one thousand, thirty".