530533621 has 2 divisors, whose sum is σ = 530533622. Its totient is φ = 530533620.

The previous prime is 530533589. The next prime is 530533649. The reversal of 530533621 is 126335035.

It is an a-pointer prime, because the next prime (530533649) can be obtained adding 530533621 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511392996 + 19140625 = 22614^2 + 4375^2 .

It is a cyclic number.

It is not a de Polignac number, because 530533621 - 2⁵ = 530533589 is a prime.

It is a super-2 number, since 2×530533621² = 562931846022743282, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 530533621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (530533651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265266810 + 265266811.

It is an arithmetic number, because the mean of its divisors is an integer number (265266811).

Almost surely, 2^530533621 is an apocalyptic number.

It is an amenable number.

530533621 is a deficient number, since it is larger than the sum of its proper divisors (1).

530533621 is an equidigital number, since it uses as much as digits as its factorization.

530533621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 530533621 is about 23033.3154582661. The cubic root of 530533621 is about 809.5387410922.

Adding to 530533621 its reverse (126335035), we get a palindrome (656868656).

The spelling of 530533621 in words is "five hundred thirty million, five hundred thirty-three thousand, six hundred twenty-one".