530221 has 4 divisors (see below), whose sum is σ = 532000. Its totient is φ = 528444.

The previous prime is 530209. The next prime is 530227. The reversal of 530221 is 122035.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122035 = 5 ⋅24407.

It is a cyclic number.

It is not a de Polignac number, because 530221 - 2⁷ = 530093 is a prime.

It is a super-2 number, since 2×530221² = 562268617682, which contains 22 as substring.

It is a Duffinian number.

530221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530227) 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, 321 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (133000).

2⁵³⁰²²¹ is an apocalyptic number.

It is an amenable number.

530221 is a deficient number, since it is larger than the sum of its proper divisors (1779).

530221 is a wasteful number, since it uses less digits than its factorization.

530221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 530221 is about 728.1627565318. The cubic root of 530221 is about 80.9379700882.

Adding to 530221 its reverse (122035), we get a palindrome (652256).

The spelling of 530221 in words is "five hundred thirty thousand, two hundred twenty-one".