520403315 has 4 divisors (see below), whose sum is σ = 624483984. Its totient is φ = 416322648.

The previous prime is 520403311. The next prime is 520403327. The reversal of 520403315 is 513304025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520403315 - 2² = 520403311 is a prime.

It is a super-2 number, since 2×520403315² = 541639220525978450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520403311) 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, 52040327 + ... + 52040336.

It is an arithmetic number, because the mean of its divisors is an integer number (156120996).

Almost surely, 2^520403315 is an apocalyptic number.

520403315 is a deficient number, since it is larger than the sum of its proper divisors (104080669).

520403315 is a wasteful number, since it uses less digits than its factorization.

520403315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104080668.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 520403315 is about 22812.3500543017. The cubic root of 520403315 is about 804.3529978645.

It can be divided in two parts, 52040 and 3315, that added together give a palindrome (55355).

The spelling of 520403315 in words is "five hundred twenty million, four hundred three thousand, three hundred fifteen".