520404652 has 12 divisors (see below), whose sum is σ = 942112080. Its totient is φ = 251229776.

The previous prime is 520404649. The next prime is 520404659. The reversal of 520404652 is 256404025.

It is a super-2 number, since 2×520404652² = 541642003646482208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520404652.

It is not an unprimeable number, because it can be changed into a prime (520404659) 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, 2243008 + ... + 2243239.

It is an arithmetic number, because the mean of its divisors is an integer number (78509340).

Almost surely, 2^520404652 is an apocalyptic number.

It is an amenable number.

520404652 is a deficient number, since it is larger than the sum of its proper divisors (421707428).

520404652 is a wasteful number, since it uses less digits than its factorization.

520404652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486280 (or 4486278 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 520404652 is about 22812.3793585851. The cubic root of 520404652 is about 804.3536867014.

Adding to 520404652 its reverse (256404025), we get a palindrome (776808677).

The spelling of 520404652 in words is "five hundred twenty million, four hundred four thousand, six hundred fifty-two".