4530530521 has 12 divisors (see below), whose sum is σ = 5001243156. Its totient is φ = 4100961920.

The previous prime is 4530530513. The next prime is 4530530569. The reversal of 4530530521 is 1250350354.

It can be written as a sum of positive squares in 2 ways, for example, as 1725239296 + 2805291225 = 41536^2 + 52965^2 .

It is not a de Polignac number, because 4530530521 - 2³ = 4530530513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4530530521.

It is not an unprimeable number, because it can be changed into a prime (4530530581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52156 + ... + 108541.

It is an arithmetic number, because the mean of its divisors is an integer number (416770263).

Almost surely, 2^4530530521 is an apocalyptic number.

It is an amenable number.

4530530521 is a deficient number, since it is larger than the sum of its proper divisors (470712635).

4530530521 is a wasteful number, since it uses less digits than its factorization.

4530530521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160952 (or 160941 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 4530530521 is about 67309.2157211774. The cubic root of 4530530521 is about 1654.6888996998.

Adding to 4530530521 its reverse (1250350354), we get a palindrome (5780880875).

The spelling of 4530530521 in words is "four billion, five hundred thirty million, five hundred thirty thousand, five hundred twenty-one".