30520057252 has 12 divisors (see below), whose sum is σ = 53441110576. Its totient is φ = 15251168520.

The previous prime is 30520057247. The next prime is 30520057259. The reversal of 30520057252 is 25275002503.

It is not an unprimeable number, because it can be changed into a prime (30520057259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2207274 + ... + 2221057.

Almost surely, 2^30520057252 is an apocalyptic number.

It is an amenable number.

30520057252 is a deficient number, since it is larger than the sum of its proper divisors (22921053324).

30520057252 is a wasteful number, since it uses less digits than its factorization.

30520057252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430058 (or 4430056 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

Adding to 30520057252 its reverse (25275002503), we get a palindrome (55795059755).

The spelling of 30520057252 in words is "thirty billion, five hundred twenty million, fifty-seven thousand, two hundred fifty-two".