530320503421 has 4 divisors (see below), whose sum is σ = 531642998844. Its totient is φ = 528998008000.

The previous prime is 530320503407. The next prime is 530320503451. The reversal of 530320503421 is 124305023035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 528549356196 + 1771147225 = 727014^2 + 42085^2 .

It is a cyclic number.

It is not a de Polignac number, because 530320503421 - 2²¹ = 530318406269 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 530320503421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530320503451) 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, 661247110 + ... + 661247911.

It is an arithmetic number, because the mean of its divisors is an integer number (132910749711).

Almost surely, 2^530320503421 is an apocalyptic number.

It is an amenable number.

530320503421 is a deficient number, since it is larger than the sum of its proper divisors (1322495423).

530320503421 is a wasteful number, since it uses less digits than its factorization.

530320503421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322495422.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 530320503421 its reverse (124305023035), we get a palindrome (654625526456).

The spelling of 530320503421 in words is "five hundred thirty billion, three hundred twenty million, five hundred three thousand, four hundred twenty-one".