530220521 has 8 divisors (see below), whose sum is σ = 535428360. Its totient is φ = 525021952.

The previous prime is 530220461. The next prime is 530220529. The reversal of 530220521 is 125022035.

It can be written as a sum of positive squares in 4 ways, for example, as 57592921 + 472627600 = 7589^2 + 21740^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 530220521 - 2²⁶ = 463111657 is a prime.

It is a super-2 number, since 2×530220521² = 562267601779022882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 530220493 and 530220502.

It is not an unprimeable number, because it can be changed into a prime (530220529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180815 + ... + 183723.

It is an arithmetic number, because the mean of its divisors is an integer number (66928545).

Almost surely, 2^530220521 is an apocalyptic number.

It is an amenable number.

530220521 is a deficient number, since it is larger than the sum of its proper divisors (5207839).

530220521 is a wasteful number, since it uses less digits than its factorization.

530220521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 530220521 is about 23026.5177784223. The cubic root of 530220521 is about 809.3794571511.

Adding to 530220521 its reverse (125022035), we get a palindrome (655242556).

The spelling of 530220521 in words is "five hundred thirty million, two hundred twenty thousand, five hundred twenty-one".