85505212 has 18 divisors (see below), whose sum is σ = 162031128. Its totient is φ = 39463632.

The previous prime is 85505207. The next prime is 85505221. The reversal of 85505212 is 21250558.

It is a super-2 number, since 2×85505212² = 14622282558329888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 62568 + ... + 63919.

Almost surely, 2^85505212 is an apocalyptic number.

It is an amenable number.

85505212 is a deficient number, since it is larger than the sum of its proper divisors (76525916).

85505212 is a wasteful number, since it uses less digits than its factorization.

85505212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126517 (or 126502 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 85505212 is about 9246.9028328408. The cubic root of 85505212 is about 440.5523572682.

The spelling of 85505212 in words is "eighty-five million, five hundred five thousand, two hundred twelve".