8280528521 has 8 divisors (see below), whose sum is σ = 8809174944. Its totient is φ = 7756499520.

The previous prime is 8280528499. The next prime is 8280528523. The reversal of 8280528521 is 1258250828.

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 8280528521 - 2⁶ = 8280528457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8280528523) 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, 1150655 + ... + 1157828.

It is an arithmetic number, because the mean of its divisors is an integer number (1101146868).

Almost surely, 2^8280528521 is an apocalyptic number.

It is an amenable number.

8280528521 is a deficient number, since it is larger than the sum of its proper divisors (528646423).

8280528521 is a wasteful number, since it uses less digits than its factorization.

8280528521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308711.

The product of its (nonzero) digits is 102400, while the sum is 41.

The square root of 8280528521 is about 90997.4094191697. The cubic root of 8280528521 is about 2023.1093277904.

The spelling of 8280528521 in words is "eight billion, two hundred eighty million, five hundred twenty-eight thousand, five hundred twenty-one".