520221300 has 36 divisors (see below), whose sum is σ = 1505174496. Its totient is φ = 138725600.

The previous prime is 520221281. The next prime is 520221307. The reversal of 520221300 is 3122025.

520221300 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 520221300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520221307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 866736 + ... + 867335.

Almost surely, 2^520221300 is an apocalyptic number.

520221300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520221300 is an abundant number, since it is smaller than the sum of its proper divisors (984953196).

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

520221300 is a wasteful number, since it uses less digits than its factorization.

520221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734088 (or 1734081 counting only the distinct ones).

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

The square root of 520221300 is about 22808.3603093252. The cubic root of 520221300 is about 804.2592107455.

Adding to 520221300 its reverse (3122025), we get a palindrome (523343325).

The spelling of 520221300 in words is "five hundred twenty million, two hundred twenty-one thousand, three hundred".