520040506 has 8 divisors (see below), whose sum is σ = 825946740. Its totient is φ = 244724928.

The previous prime is 520040483. The next prime is 520040509. The reversal of 520040506 is 605040025.

It can be written as a sum of positive squares in 2 ways, for example, as 512614881 + 7425625 = 22641^2 + 2725^2 .

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

It is not an unprimeable number, because it can be changed into a prime (520040509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7647621 + ... + 7647688.

Almost surely, 2^520040506 is an apocalyptic number.

520040506 is a deficient number, since it is larger than the sum of its proper divisors (305906234).

520040506 is a wasteful number, since it uses less digits than its factorization.

520040506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15295328.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520040506 is about 22804.3966374908. The cubic root of 520040506 is about 804.1660311138.

The spelling of 520040506 in words is "five hundred twenty million, forty thousand, five hundred six".