520223700 has 72 divisors (see below), whose sum is σ = 1545894112. Its totient is φ = 134974080.

The previous prime is 520223699. The next prime is 520223719. The reversal of 520223700 is 7322025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12334 + ... + 34533.

Almost surely, 2^520223700 is an apocalyptic number.

520223700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520223700 is an abundant number, since it is smaller than the sum of its proper divisors (1025670412).

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

520223700 is a wasteful number, since it uses less digits than its factorization.

520223700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46921 (or 46914 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 520223700 is about 22808.4129215516. The cubic root of 520223700 is about 804.2604475391.

Adding to 520223700 its reverse (7322025), we get a palindrome (527545725).

The spelling of 520223700 in words is "five hundred twenty million, two hundred twenty-three thousand, seven hundred".