520353500 has 48 divisors (see below), whose sum is σ = 1139261760. Its totient is φ = 207627200.

The previous prime is 520353481. The next prime is 520353511. The reversal of 520353500 is 5353025.

Added to its reverse (5353025) it gives a triangular number (525706525 = T₃₂₄₂₅).

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250466 + ... + 252534.

It is an arithmetic number, because the mean of its divisors is an integer number (23734620).

Almost surely, 2^520353500 is an apocalyptic number.

520353500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520353500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569630880).

520353500 is an abundant number, since it is smaller than the sum of its proper divisors (618908260).

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

520353500 is a wasteful number, since it uses less digits than its factorization.

520353500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 2579 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 520353500 is about 22811.2581853786. The cubic root of 520353500 is about 804.3273317949.

Adding to 520353500 its reverse (5353025), we get a triangular number (525706525 = T₃₂₄₂₅).

The spelling of 520353500 in words is "five hundred twenty million, three hundred fifty-three thousand, five hundred".