853253785 has 4 divisors (see below), whose sum is σ = 1023904548. Its totient is φ = 682603024.

The previous prime is 853253761. The next prime is 853253803. The reversal of 853253785 is 587352358.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 526656601 + 326597184 = 22949^2 + 18072^2 .

It is a cyclic number.

It is not a de Polignac number, because 853253785 - 2⁷ = 853253657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85325374 + ... + 85325383.

It is an arithmetic number, because the mean of its divisors is an integer number (255976137).

Almost surely, 2^853253785 is an apocalyptic number.

It is an amenable number.

853253785 is a deficient number, since it is larger than the sum of its proper divisors (170650763).

853253785 is a wasteful number, since it uses less digits than its factorization.

853253785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170650762.

The product of its digits is 1008000, while the sum is 46.

The square root of 853253785 is about 29210.5081263575. The cubic root of 853253785 is about 948.4754068508.

The spelling of 853253785 in words is "eight hundred fifty-three million, two hundred fifty-three thousand, seven hundred eighty-five".