853211081 has 2 divisors, whose sum is σ = 853211082. Its totient is φ = 853211080.

The previous prime is 853211077. The next prime is 853211111. The reversal of 853211081 is 180112358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809914681 + 43296400 = 28459^2 + 6580^2 .

It is a cyclic number.

It is not a de Polignac number, because 853211081 - 2² = 853211077 is a prime.

It is a super-3 number, since 3×853211081³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (853211981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426605540 + 426605541.

It is an arithmetic number, because the mean of its divisors is an integer number (426605541).

Almost surely, 2^853211081 is an apocalyptic number.

It is an amenable number.

853211081 is a deficient number, since it is larger than the sum of its proper divisors (1).

853211081 is an equidigital number, since it uses as much as digits as its factorization.

853211081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 853211081 is about 29209.7771473868. Note that the first 3 decimals coincide. The cubic root of 853211081 is about 948.4595833564.

The spelling of 853211081 in words is "eight hundred fifty-three million, two hundred eleven thousand, eighty-one".