530079921 has 24 divisors (see below), whose sum is σ = 883559040. Its totient is φ = 299958336.

The previous prime is 530079887. The next prime is 530079931. The reversal of 530079921 is 129970035.

It is not a de Polignac number, because 530079921 - 2⁷ = 530079793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (530079931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34356 + ... + 47333.

It is an arithmetic number, because the mean of its divisors is an integer number (36814960).

Almost surely, 2^530079921 is an apocalyptic number.

It is an amenable number.

530079921 is a deficient number, since it is larger than the sum of its proper divisors (353479119).

530079921 is a wasteful number, since it uses less digits than its factorization.

530079921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81805 (or 81802 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 530079921 is about 23023.4645742121. The cubic root of 530079921 is about 809.3079090515.

The spelling of 530079921 in words is "five hundred thirty million, seventy-nine thousand, nine hundred twenty-one".