530421030345521 has 4 divisors (see below), whose sum is σ = 606195463252032. Its totient is φ = 454646597439012.

The previous prime is 530421030345473. The next prime is 530421030345523. The reversal of 530421030345521 is 125543030124035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 530421030345521 - 2²⁶ = 530420963236657 is a prime.

It is a super-2 number, since 2×530421030345521² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530421030345523) 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, 37887216453245 + ... + 37887216453258.

It is an arithmetic number, because the mean of its divisors is an integer number (151548865813008).

Almost surely, 2^{530421030345521} is an apocalyptic number.

It is an amenable number.

530421030345521 is a deficient number, since it is larger than the sum of its proper divisors (75774432906511).

530421030345521 is an equidigital number, since it uses as much as digits as its factorization.

530421030345521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75774432906510.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 530421030345521 its reverse (125543030124035), we get a palindrome (655964060469556).

The spelling of 530421030345521 in words is "five hundred thirty trillion, four hundred twenty-one billion, thirty million, three hundred forty-five thousand, five hundred twenty-one".