8521853 has 6 divisors (see below), whose sum is σ = 8826714. Its totient is φ = 8227184.

The previous prime is 8521841. The next prime is 8521867. The reversal of 8521853 is 3581258.

It is a happy number.

8521853 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2553604 + 5968249 = 1598^2 + 2443^2 .

It is not a de Polignac number, because 8521853 - 2⁶ = 8521789 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4226 + ... + 5907.

It is an arithmetic number, because the mean of its divisors is an integer number (1471119).

Almost surely, 2^8521853 is an apocalyptic number.

It is an amenable number.

8521853 is a deficient number, since it is larger than the sum of its proper divisors (304861).

8521853 is a wasteful number, since it uses less digits than its factorization.

8521853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10191 (or 10162 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 8521853 is about 2919.2213002786. The cubic root of 8521853 is about 204.2575003476.

The spelling of 8521853 in words is "eight million, five hundred twenty-one thousand, eight hundred fifty-three".