520478351 has 16 divisors (see below), whose sum is σ = 537316416. Its totient is φ = 504000000.

The previous prime is 520478303. The next prime is 520478363. The reversal of 520478351 is 153874025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 520478351 - 2¹⁴ = 520461967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520478551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1297751 + ... + 1298151.

It is an arithmetic number, because the mean of its divisors is an integer number (33582276).

Almost surely, 2^520478351 is an apocalyptic number.

520478351 is a deficient number, since it is larger than the sum of its proper divisors (16838065).

520478351 is a wasteful number, since it uses less digits than its factorization.

520478351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 520478351 is about 22813.9946304894. The cubic root of 520478351 is about 804.3916554013.

The spelling of 520478351 in words is "five hundred twenty million, four hundred seventy-eight thousand, three hundred fifty-one".