85043505 has 16 divisors (see below), whose sum is σ = 137600640. Its totient is φ = 44846208.

The previous prime is 85043477. The next prime is 85043531. The reversal of 85043505 is 50534058.

It is not a de Polignac number, because 85043505 - 2⁵ = 85043473 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30517 + ... + 33186.

It is an arithmetic number, because the mean of its divisors is an integer number (8600040).

Almost surely, 2^85043505 is an apocalyptic number.

It is an amenable number.

85043505 is a deficient number, since it is larger than the sum of its proper divisors (52557135).

85043505 is a wasteful number, since it uses less digits than its factorization.

85043505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63800.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 85043505 is about 9221.9035453642. The cubic root of 85043505 is about 439.7579677843.

The spelling of 85043505 in words is "eighty-five million, forty-three thousand, five hundred five".