530989021 has 4 divisors (see below), whose sum is σ = 533922844. Its totient is φ = 528055200.

The previous prime is 530989013. The next prime is 530989027. The reversal of 530989021 is 120989035.

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 88096996 + 442892025 = 9386^2 + 21045^2 .

It is a cyclic number.

It is not a de Polignac number, because 530989021 - 2³ = 530989013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530989027) 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, 1466640 + ... + 1467001.

It is an arithmetic number, because the mean of its divisors is an integer number (133480711).

Almost surely, 2^530989021 is an apocalyptic number.

It is an amenable number.

530989021 is a deficient number, since it is larger than the sum of its proper divisors (2933823).

530989021 is a wasteful number, since it uses less digits than its factorization.

530989021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933822.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 530989021 is about 23043.1990183655. The cubic root of 530989021 is about 809.7703057495.

The spelling of 530989021 in words is "five hundred thirty million, nine hundred eighty-nine thousand, twenty-one".