85224555 has 40 divisors (see below), whose sum is σ = 164534832. Its totient is φ = 41954112.

The previous prime is 85224523. The next prime is 85224563. The reversal of 85224555 is 55542258.

It is a happy number.

85224555 is a `hidden beast` number, since 85 + 2 + 24 + 555 = 666.

It is not a de Polignac number, because 85224555 - 2⁵ = 85224523 is a prime.

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 39 ways as a sum of consecutive naturals, for example, 2829 + ... + 13358.

Almost surely, 2^85224555 is an apocalyptic number.

85224555 is a deficient number, since it is larger than the sum of its proper divisors (79310277).

85224555 is a wasteful number, since it uses less digits than its factorization.

85224555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16217 (or 16208 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The square root of 85224555 is about 9231.7146294716. The cubic root of 85224555 is about 440.0698150238.

The spelling of 85224555 in words is "eighty-five million, two hundred twenty-four thousand, five hundred fifty-five".