520541730 has 48 divisors (see below), whose sum is σ = 1354639104. Its totient is φ = 138684960.

The previous prime is 520541713. The next prime is 520541741. The reversal of 520541730 is 37145025.

It is a happy number.

520541730 is a `hidden beast` number, since 52 + 0 + 541 + 73 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 520541694 and 520541703.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139185 + ... + 142875.

It is an arithmetic number, because the mean of its divisors is an integer number (28221648).

Almost surely, 2^520541730 is an apocalyptic number.

520541730 is an abundant number, since it is smaller than the sum of its proper divisors (834097374).

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

520541730 is a wasteful number, since it uses less digits than its factorization.

520541730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271 (or 5268 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 520541730 is about 22815.3836259661. The cubic root of 520541730 is about 804.4243045143.

Adding to 520541730 its reverse (37145025), we get a palindrome (557686755).

The spelling of 520541730 in words is "five hundred twenty million, five hundred forty-one thousand, seven hundred thirty".