520014521 has 32 divisors (see below), whose sum is σ = 604558080. Its totient is φ = 446160000.

The previous prime is 520014503. The next prime is 520014557. The reversal of 520014521 is 125410025.

It is a de Polignac number, because none of the positive numbers 2^k-520014521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520014493 and 520014502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520014421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2071646 + ... + 2071896.

It is an arithmetic number, because the mean of its divisors is an integer number (18892440).

Almost surely, 2^520014521 is an apocalyptic number.

It is an amenable number.

520014521 is a deficient number, since it is larger than the sum of its proper divisors (84543559).

520014521 is a wasteful number, since it uses less digits than its factorization.

520014521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 520014521 is about 22803.8268937475. The cubic root of 520014521 is about 804.1526368993.

Adding to 520014521 its reverse (125410025), we get a palindrome (645424546).

The spelling of 520014521 in words is "five hundred twenty million, fourteen thousand, five hundred twenty-one".