520514040 has 128 divisors (see below), whose sum is σ = 1623758400. Its totient is φ = 133324800.

The previous prime is 520514009. The next prime is 520514119. The reversal of 520514040 is 40415025.

It is a junction number, because it is equal to n+sod(n) for n = 520513998 and 520514016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1297840 + ... + 1298240.

Almost surely, 2^520514040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520514040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811879200).

520514040 is an abundant number, since it is smaller than the sum of its proper divisors (1103244360).

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

520514040 is a wasteful number, since it uses less digits than its factorization.

520514040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 520514040 is about 22814.7767904926. The cubic root of 520514040 is about 804.4100405897.

Adding to 520514040 its reverse (40415025), we get a palindrome (560929065).

The spelling of 520514040 in words is "five hundred twenty million, five hundred fourteen thousand, forty".