520413450 has 48 divisors (see below), whose sum is σ = 1293667200. Its totient is φ = 138449920.

The previous prime is 520413449. The next prime is 520413493. The reversal of 520413450 is 54314025.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520413450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63487 + ... + 71213.

It is an arithmetic number, because the mean of its divisors is an integer number (26951400).

Almost surely, 2^520413450 is an apocalyptic number.

520413450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

520413450 is an abundant number, since it is smaller than the sum of its proper divisors (773253750).

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

520413450 is a wasteful number, since it uses less digits than its factorization.

520413450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8191 (or 8186 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 520413450 is about 22812.5721916666. The cubic root of 520413450 is about 804.3582194971.

Adding to 520413450 its reverse (54314025), we get a palindrome (574727475).

The spelling of 520413450 in words is "five hundred twenty million, four hundred thirteen thousand, four hundred fifty".