853247357 has 6 divisors (see below), whose sum is σ = 906391098. Its totient is φ = 803056064.

The previous prime is 853247327. The next prime is 853247401. The reversal of 853247357 is 753742358.

It can be written as a sum of positive squares in 3 ways, for example, as 228947161 + 624300196 = 15131^2 + 24986^2 .

It is not a de Polignac number, because 853247357 - 2¹⁰ = 853246333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853247327) 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, 1475918 + ... + 1476495.

It is an arithmetic number, because the mean of its divisors is an integer number (151065183).

Almost surely, 2^853247357 is an apocalyptic number.

It is an amenable number.

853247357 is a deficient number, since it is larger than the sum of its proper divisors (53143741).

853247357 is a wasteful number, since it uses less digits than its factorization.

853247357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952447 (or 2952430 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The square root of 853247357 is about 29210.3980972530. The cubic root of 853247357 is about 948.4730250603.

The spelling of 853247357 in words is "eight hundred fifty-three million, two hundred forty-seven thousand, three hundred fifty-seven".