8294521 has 8 divisors (see below), whose sum is σ = 8811720. Its totient is φ = 7780608.

The previous prime is 8294509. The next prime is 8294543. The reversal of 8294521 is 1254928.

It can be written as a sum of positive squares in 4 ways, for example, as 5588496 + 2706025 = 2364^2 + 1645^2 .

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 8294521 - 2⁹ = 8294009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8294501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6135 + ... + 7363.

It is an arithmetic number, because the mean of its divisors is an integer number (1101465).

Almost surely, 2^8294521 is an apocalyptic number.

It is an amenable number.

8294521 is a deficient number, since it is larger than the sum of its proper divisors (517199).

8294521 is a wasteful number, since it uses less digits than its factorization.

8294521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643.

The product of its digits is 5760, while the sum is 31.

The square root of 8294521 is about 2880.0210068678. The cubic root of 8294521 is about 202.4248239978.

The spelling of 8294521 in words is "eight million, two hundred ninety-four thousand, five hundred twenty-one".