5239549521 has 12 divisors (see below), whose sum is σ = 7600722948. Its totient is φ = 3478040064.

The previous prime is 5239549517. The next prime is 5239549529. The reversal of 5239549521 is 1259459325.

5239549521 is a `hidden beast` number, since 52 + 3 + 9 + 549 + 52 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3470505921 + 1769043600 = 58911^2 + 42060^2 .

It is not a de Polignac number, because 5239549521 - 2² = 5239549517 is a prime.

It is a super-2 number, since 2×5239549521² = 54905758366022658882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5239549529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1247200 + ... + 1251393.

It is an arithmetic number, because the mean of its divisors is an integer number (633393579).

Almost surely, 2^5239549521 is an apocalyptic number.

It is an amenable number.

5239549521 is a deficient number, since it is larger than the sum of its proper divisors (2361173427).

5239549521 is a wasteful number, since it uses less digits than its factorization.

5239549521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498832 (or 2498829 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The square root of 5239549521 is about 72384.7326512988. The cubic root of 5239549521 is about 1736.8593455112.

The spelling of 5239549521 in words is "five billion, two hundred thirty-nine million, five hundred forty-nine thousand, five hundred twenty-one".