520442500 has 60 divisors (see below), whose sum is σ = 1145445840. Its totient is φ = 206836000.

The previous prime is 520442491. The next prime is 520442501. The reversal of 520442500 is 5244025.

It is not an unprimeable number, because it can be changed into a prime (520442501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 446919 + ... + 448081.

It is an arithmetic number, because the mean of its divisors is an integer number (19090764).

Almost surely, 2^520442500 is an apocalyptic number.

520442500 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 520442500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572722920).

520442500 is an abundant number, since it is smaller than the sum of its proper divisors (625003340).

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

520442500 is a wasteful number, since it uses less digits than its factorization.

520442500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 520442500 is about 22813.2088930952. The cubic root of 520442500 is about 804.3731859124.

Adding to 520442500 its reverse (5244025), we get a palindrome (525686525).

The spelling of 520442500 in words is "five hundred twenty million, four hundred forty-two thousand, five hundred".