530305565421 has 4 divisors (see below), whose sum is σ = 707074087232. Its totient is φ = 353537043612.

The previous prime is 530305565393. The next prime is 530305565477. The reversal of 530305565421 is 124565503035.

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 not a de Polignac number, because 530305565421 - 2⁹ = 530305564909 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 530305565421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530305564421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88384260901 + ... + 88384260906.

It is an arithmetic number, because the mean of its divisors is an integer number (176768521808).

Almost surely, 2^530305565421 is an apocalyptic number.

It is an amenable number.

530305565421 is a deficient number, since it is larger than the sum of its proper divisors (176768521811).

530305565421 is a wasteful number, since it uses less digits than its factorization.

530305565421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176768521810.

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 530305565421 in words is "five hundred thirty billion, three hundred five million, five hundred sixty-five thousand, four hundred twenty-one".