520509460 has 24 divisors (see below), whose sum is σ = 1098626760. Its totient is φ = 207145344.

The previous prime is 520509421. The next prime is 520509461. The reversal of 520509460 is 64905025.

520509460 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 278022276 + 242487184 = 16674^2 + 15572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520509461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62115 + ... + 69994.

It is an arithmetic number, because the mean of its divisors is an integer number (45776115).

Almost surely, 2^520509460 is an apocalyptic number.

It is an amenable number.

520509460 is an abundant number, since it is smaller than the sum of its proper divisors (578117300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520509460 is a wasteful number, since it uses less digits than its factorization.

520509460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132315 (or 132313 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 520509460 is about 22814.6764167279. The cubic root of 520509460 is about 804.4076812497.

The spelling of 520509460 in words is "five hundred twenty million, five hundred nine thousand, four hundred sixty".