8573539 has 12 divisors (see below), whose sum is σ = 9397416. Its totient is φ = 7817472.

The previous prime is 8573533. The next prime is 8573561. The reversal of 8573539 is 9353758.

It is a happy number.

It is not a de Polignac number, because 8573539 - 2⁵ = 8573507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8573533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16132 + ... + 16654.

It is an arithmetic number, because the mean of its divisors is an integer number (783118).

Almost surely, 2^8573539 is an apocalyptic number.

8573539 is a deficient number, since it is larger than the sum of its proper divisors (823877).

8573539 is a wasteful number, since it uses less digits than its factorization.

8573539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 633 counting only the distinct ones).

The product of its digits is 113400, while the sum is 40.

The square root of 8573539 is about 2928.0606209572. The cubic root of 8573539 is about 204.6696165523.

It can be divided in two parts, 857353 and 9, that multiplied together give a palindrome (7716177).

The spelling of 8573539 in words is "eight million, five hundred seventy-three thousand, five hundred thirty-nine".