520315 has 8 divisors (see below), whose sum is σ = 657360. Its totient is φ = 394272.

The previous prime is 520313. The next prime is 520339. The reversal of 520315 is 513025.

520315 = 98² + 99² + ... + 135².

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

It is a cyclic number.

It is not a de Polignac number, because 520315 - 2¹ = 520313 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (520313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2644 + ... + 2833.

It is an arithmetic number, because the mean of its divisors is an integer number (82170).

2⁵²⁰³¹⁵ is an apocalyptic number.

520315 is a deficient number, since it is larger than the sum of its proper divisors (137045).

520315 is a wasteful number, since it uses less digits than its factorization.

520315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 520315 is about 721.3286352281. The cubic root of 520315 is about 80.4307494405.

The spelling of 520315 in words is "five hundred twenty thousand, three hundred fifteen".