8535521 has 4 divisors (see below), whose sum is σ = 8563632. Its totient is φ = 8507412.

The previous prime is 8535487. The next prime is 8535523. The reversal of 8535521 is 1255358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8535521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8535523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13595 + ... + 14208.

It is an arithmetic number, because the mean of its divisors is an integer number (2140908).

Almost surely, 2^8535521 is an apocalyptic number.

It is an amenable number.

8535521 is a deficient number, since it is larger than the sum of its proper divisors (28111).

8535521 is a wasteful number, since it uses less digits than its factorization.

8535521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28110.

The product of its digits is 6000, while the sum is 29.

The square root of 8535521 is about 2921.5613976092. The cubic root of 8535521 is about 204.3666432879.

The spelling of 8535521 in words is "eight million, five hundred thirty-five thousand, five hundred twenty-one".