85505223 has 16 divisors (see below), whose sum is σ = 124609536. Its totient is φ = 51918720.

The previous prime is 85505221. The next prime is 85505227. The reversal of 85505223 is 32250558.

It is not a de Polignac number, because 85505223 - 2¹ = 85505221 is a prime.

It is a super-2 number, since 2×85505223² = 14622286320559458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85505221) 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, 25461 + ... + 28622.

It is an arithmetic number, because the mean of its divisors is an integer number (7788096).

Almost surely, 2^85505223 is an apocalyptic number.

85505223 is a deficient number, since it is larger than the sum of its proper divisors (39104313).

85505223 is a wasteful number, since it uses less digits than its factorization.

85505223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54134.

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

The square root of 85505223 is about 9246.9034276346. The cubic root of 85505223 is about 440.5523761602.

The spelling of 85505223 in words is "eighty-five million, five hundred five thousand, two hundred twenty-three".