520465765 has 24 divisors (see below), whose sum is σ = 673302240. Its totient is φ = 385154784.

The previous prime is 520465763. The next prime is 520465793. The reversal of 520465765 is 567564025.

It is not a de Polignac number, because 520465765 - 2¹ = 520465763 is a prime.

It is a super-2 number, since 2×520465765² = 541769225074070450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520465763) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174174 + ... + 177136.

It is an arithmetic number, because the mean of its divisors is an integer number (28054260).

Almost surely, 2^520465765 is an apocalyptic number.

It is an amenable number.

520465765 is a deficient number, since it is larger than the sum of its proper divisors (152836475).

520465765 is a wasteful number, since it uses less digits than its factorization.

520465765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073 (or 3030 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 520465765 is about 22813.7187893601. The cubic root of 520465765 is about 804.3851715229.

The spelling of 520465765 in words is "five hundred twenty million, four hundred sixty-five thousand, seven hundred sixty-five".