8542548521 has 8 divisors (see below), whose sum is σ = 9203062344. Its totient is φ = 7882519680.

The previous prime is 8542548503. The next prime is 8542548541. The reversal of 8542548521 is 1258452458.

It can be written as a sum of positive squares in 4 ways, for example, as 2755600 + 8539792921 = 1660^2 + 92411^2 .

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 8542548521 - 2⁶ = 8542548457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8542548541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84236 + ... + 155501.

It is an arithmetic number, because the mean of its divisors is an integer number (1150382793).

Almost surely, 2^8542548521 is an apocalyptic number.

It is an amenable number.

8542548521 is a deficient number, since it is larger than the sum of its proper divisors (660513823).

8542548521 is a wasteful number, since it uses less digits than its factorization.

8542548521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242491.

The product of its digits is 512000, while the sum is 44.

The square root of 8542548521 is about 92425.9082779282. The cubic root of 8542548521 is about 2044.2271472965.

The spelling of 8542548521 in words is "eight billion, five hundred forty-two million, five hundred forty-eight thousand, five hundred twenty-one".