8529775421 has 8 divisors (see below), whose sum is σ = 8549036160. Its totient is φ = 8510531328.

The previous prime is 8529775417. The next prime is 8529775459. The reversal of 8529775421 is 1245779258.

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 8529775421 - 2² = 8529775417 is a prime.

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 8529775421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8529705421) 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, 1963670 + ... + 1968008.

It is an arithmetic number, because the mean of its divisors is an integer number (1068629520).

Almost surely, 2^8529775421 is an apocalyptic number.

It is an amenable number.

8529775421 is a deficient number, since it is larger than the sum of its proper divisors (19260739).

8529775421 is a wasteful number, since it uses less digits than its factorization.

8529775421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323.

The product of its digits is 1411200, while the sum is 50.

The square root of 8529775421 is about 92356.7832971677. The cubic root of 8529775421 is about 2043.2077738000.

The spelling of 8529775421 in words is "eight billion, five hundred twenty-nine million, seven hundred seventy-five thousand, four hundred twenty-one".