85170853 has 2 divisors, whose sum is σ = 85170854. Its totient is φ = 85170852.

The previous prime is 85170847. The next prime is 85170859. The reversal of 85170853 is 35807158.

It is a balanced prime because it is at equal distance from previous prime (85170847) and next prime (85170859).

It can be written as a sum of positive squares in only one way, i.e., 74943649 + 10227204 = 8657^2 + 3198^2 .

It is a cyclic number.

It is not a de Polignac number, because 85170853 - 2⁵ = 85170821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85170859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42585426 + 42585427.

It is an arithmetic number, because the mean of its divisors is an integer number (42585427).

Almost surely, 2^85170853 is an apocalyptic number.

It is an amenable number.

85170853 is a deficient number, since it is larger than the sum of its proper divisors (1).

85170853 is an equidigital number, since it uses as much as digits as its factorization.

85170853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 85170853 is about 9228.8056106952. The cubic root of 85170853 is about 439.9773628161.

The spelling of 85170853 in words is "eighty-five million, one hundred seventy thousand, eight hundred fifty-three".