85102005 has 16 divisors (see below), whose sum is σ = 136427904. Its totient is φ = 45299520.

The previous prime is 85101967. The next prime is 85102009. The reversal of 85102005 is 50020158.

It is not a de Polignac number, because 85102005 - 2¹⁴ = 85085621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85102009) 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 in 15 ways as a sum of consecutive naturals, for example, 2872 + ... + 13358.

It is an arithmetic number, because the mean of its divisors is an integer number (8526744).

Almost surely, 2^85102005 is an apocalyptic number.

It is an amenable number.

85102005 is a deficient number, since it is larger than the sum of its proper divisors (51325899).

85102005 is a wasteful number, since it uses less digits than its factorization.

85102005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11036.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 85102005 is about 9225.0747964447. The cubic root of 85102005 is about 439.8587787146.

The spelling of 85102005 in words is "eighty-five million, one hundred two thousand, five".