530521 has 4 divisors (see below), whose sum is σ = 533412. Its totient is φ = 527632.

The previous prime is 530513. The next prime is 530527. The reversal of 530521 is 125035.

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 404496 + 126025 = 636^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 530521 - 2³ = 530513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 530495 and 530504.

It is not an unprimeable number, because it can be changed into a prime (530527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150 + ... + 1543.

It is an arithmetic number, because the mean of its divisors is an integer number (133353).

2⁵³⁰⁵²¹ is an apocalyptic number.

It is an amenable number.

530521 is a deficient number, since it is larger than the sum of its proper divisors (2891).

530521 is a wasteful number, since it uses less digits than its factorization.

530521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 530521 is about 728.3687253033. The cubic root of 530521 is about 80.9532321600.

Adding to 530521 its reverse (125035), we get a palindrome (655556).

The spelling of 530521 in words is "five hundred thirty thousand, five hundred twenty-one".