8468521 has 2 divisors, whose sum is σ = 8468522. Its totient is φ = 8468520.

The previous prime is 8468519. The next prime is 8468527. The reversal of 8468521 is 1258648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6325225 + 2143296 = 2515^2 + 1464^2 .

It is a cyclic number.

It is not a de Polignac number, because 8468521 - 2¹ = 8468519 is a prime.

Together with 8468519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8468527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4234260 + 4234261.

It is an arithmetic number, because the mean of its divisors is an integer number (4234261).

Almost surely, 2^8468521 is an apocalyptic number.

It is an amenable number.

8468521 is a deficient number, since it is larger than the sum of its proper divisors (1).

8468521 is an equidigital number, since it uses as much as digits as its factorization.

8468521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 34.

The square root of 8468521 is about 2910.0723358707. The cubic root of 8468521 is about 203.8305092904.

The spelling of 8468521 in words is "eight million, four hundred sixty-eight thousand, five hundred twenty-one".