853155397 has 2 divisors, whose sum is σ = 853155398. Its totient is φ = 853155396.

The previous prime is 853155343. The next prime is 853155403. The reversal of 853155397 is 793551358.

853155397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 840188196 + 12967201 = 28986^2 + 3601^2 .

It is a cyclic number.

It is not a de Polignac number, because 853155397 - 2⁷ = 853155269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853155337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426577698 + 426577699.

It is an arithmetic number, because the mean of its divisors is an integer number (426577699).

Almost surely, 2^853155397 is an apocalyptic number.

It is an amenable number.

853155397 is a deficient number, since it is larger than the sum of its proper divisors (1).

853155397 is an equidigital number, since it uses as much as digits as its factorization.

853155397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 46.

The square root of 853155397 is about 29208.8239578385. The cubic root of 853155397 is about 948.4389494736.

The spelling of 853155397 in words is "eight hundred fifty-three million, one hundred fifty-five thousand, three hundred ninety-seven".