520752530 has 8 divisors (see below), whose sum is σ = 937354572. Its totient is φ = 208301008.

The previous prime is 520752511. The next prime is 520752587. The reversal of 520752530 is 35257025.

It can be written as a sum of positive squares in 2 ways, for example, as 504406681 + 16345849 = 22459^2 + 4043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 520752493 and 520752502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26037617 + ... + 26037636.

Almost surely, 2^520752530 is an apocalyptic number.

520752530 is a deficient number, since it is larger than the sum of its proper divisors (416602042).

520752530 is a wasteful number, since it uses less digits than its factorization.

520752530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52075260.

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 520752530 is about 22820.0028483784. The cubic root of 520752530 is about 804.5328771472.

The spelling of 520752530 in words is "five hundred twenty million, seven hundred fifty-two thousand, five hundred thirty".