530987521 has 8 divisors (see below), whose sum is σ = 546075200. Its totient is φ = 516024432.

The previous prime is 530987491. The next prime is 530987533. The reversal of 530987521 is 125789035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 530987521 - 2⁵ = 530987489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530987921) 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, 22470 + ... + 39583.

It is an arithmetic number, because the mean of its divisors is an integer number (68259400).

Almost surely, 2^530987521 is an apocalyptic number.

It is an amenable number.

530987521 is a deficient number, since it is larger than the sum of its proper divisors (15087679).

530987521 is a wasteful number, since it uses less digits than its factorization.

530987521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62295.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 530987521 is about 23043.1664707783. The cubic root of 530987521 is about 809.7695432374.

The spelling of 530987521 in words is "five hundred thirty million, nine hundred eighty-seven thousand, five hundred twenty-one".