85751773 has 2 divisors, whose sum is σ = 85751774. Its totient is φ = 85751772.

The previous prime is 85751737. The next prime is 85751777. The reversal of 85751773 is 37715758.

Together with previous prime (85751737) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85710564 + 41209 = 9258^2 + 203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85751773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85751777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42875886 + 42875887.

It is an arithmetic number, because the mean of its divisors is an integer number (42875887).

Almost surely, 2^85751773 is an apocalyptic number.

It is an amenable number.

85751773 is a deficient number, since it is larger than the sum of its proper divisors (1).

85751773 is an equidigital number, since it uses as much as digits as its factorization.

85751773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205800, while the sum is 43.

The square root of 85751773 is about 9260.2253212327. The cubic root of 85751773 is about 440.9754066804.

The spelling of 85751773 in words is "eighty-five million, seven hundred fifty-one thousand, seven hundred seventy-three".