530343521 has 4 divisors (see below), whose sum is σ = 531127572. Its totient is φ = 529559472.

The previous prime is 530343481. The next prime is 530343551. The reversal of 530343521 is 125343035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125343035 = 5 ⋅25068607.

It can be written as a sum of positive squares in 2 ways, for example, as 500148496 + 30195025 = 22364^2 + 5495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-530343521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530343551) 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, 391010 + ... + 392363.

It is an arithmetic number, because the mean of its divisors is an integer number (132781893).

Almost surely, 2^530343521 is an apocalyptic number.

It is an amenable number.

530343521 is a deficient number, since it is larger than the sum of its proper divisors (784051).

530343521 is an equidigital number, since it uses as much as digits as its factorization.

530343521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784050.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 530343521 is about 23029.1884572601. The cubic root of 530343521 is about 809.4420386445.

Adding to 530343521 its reverse (125343035), we get a palindrome (655686556).

The spelling of 530343521 in words is "five hundred thirty million, three hundred forty-three thousand, five hundred twenty-one".