530221620 has 24 divisors (see below), whose sum is σ = 1484620704. Its totient is φ = 141392416.

The previous prime is 530221609. The next prime is 530221621. The reversal of 530221620 is 26122035.

It is a super-2 number, since 2×530221620² = 562269932630848800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530221621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4418454 + ... + 4418573.

It is an arithmetic number, because the mean of its divisors is an integer number (61859196).

Almost surely, 2^530221620 is an apocalyptic number.

It is an amenable number.

530221620 is an abundant number, since it is smaller than the sum of its proper divisors (954399084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

530221620 is a wasteful number, since it uses less digits than its factorization.

530221620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8837039 (or 8837037 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 530221620 is about 23026.5416422006. The cubic root of 530221620 is about 809.3800163571.

Adding to 530221620 its reverse (26122035), we get a palindrome (556343655).

The spelling of 530221620 in words is "five hundred thirty million, two hundred twenty-one thousand, six hundred twenty".