520215652 has 12 divisors (see below), whose sum is σ = 993139056. Its totient is φ = 236461640.

The previous prime is 520215643. The next prime is 520215653. The reversal of 520215652 is 256512025.

It is a self number, because there is not a number n which added to its sum of digits gives 520215652.

It is not an unprimeable number, because it can be changed into a prime (520215653) 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, 5911498 + ... + 5911585.

It is an arithmetic number, because the mean of its divisors is an integer number (82761588).

Almost surely, 2^520215652 is an apocalyptic number.

It is an amenable number.

520215652 is a deficient number, since it is larger than the sum of its proper divisors (472923404).

520215652 is a wasteful number, since it uses less digits than its factorization.

520215652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11823098 (or 11823096 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 520215652 is about 22808.2364947402. The cubic root of 520215652 is about 804.2563001429.

Adding to 520215652 its reverse (256512025), we get a palindrome (776727677).

The spelling of 520215652 in words is "five hundred twenty million, two hundred fifteen thousand, six hundred fifty-two".