8521290539 has 4 divisors (see below), whose sum is σ = 8891781456. Its totient is φ = 8150799624.

The previous prime is 8521290529. The next prime is 8521290541. The reversal of 8521290539 is 9350921258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8521290539 - 2³² = 4226323243 is a prime.

It is a super-2 number, since 2×8521290539² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8521290539.

It is not an unprimeable number, because it can be changed into a prime (8521290529) 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, 185245424 + ... + 185245469.

It is an arithmetic number, because the mean of its divisors is an integer number (2222945364).

Almost surely, 2^8521290539 is an apocalyptic number.

8521290539 is a deficient number, since it is larger than the sum of its proper divisors (370490917).

8521290539 is a wasteful number, since it uses less digits than its factorization.

8521290539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370490916.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 8521290539 is about 92310.8365198799. The cubic root of 8521290539 is about 2042.5300643426.

The spelling of 8521290539 in words is "eight billion, five hundred twenty-one million, two hundred ninety thousand, five hundred thirty-nine".