530721285 has 16 divisors (see below), whose sum is σ = 849440256. Its totient is φ = 282955968.

The previous prime is 530721239. The next prime is 530721307. The reversal of 530721285 is 582127035.

It is not a de Polignac number, because 530721285 - 2⁸ = 530721029 is a prime.

It is a super-3 number, since 3×530721285³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80172 + ... + 86538.

It is an arithmetic number, because the mean of its divisors is an integer number (53090016).

Almost surely, 2^530721285 is an apocalyptic number.

It is an amenable number.

530721285 is a deficient number, since it is larger than the sum of its proper divisors (318718971).

530721285 is a wasteful number, since it uses less digits than its factorization.

530721285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11932.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 530721285 is about 23037.3888494334. The cubic root of 530721285 is about 809.6341817096.

The spelling of 530721285 in words is "five hundred thirty million, seven hundred twenty-one thousand, two hundred eighty-five".