85544005 has 4 divisors (see below), whose sum is σ = 102652812. Its totient is φ = 68435200.

The previous prime is 85543993. The next prime is 85544047. The reversal of 85544005 is 50044558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30813601 + 54730404 = 5551^2 + 7398^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85544005 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 8554396 + ... + 8554405.

It is an arithmetic number, because the mean of its divisors is an integer number (25663203).

Almost surely, 2^85544005 is an apocalyptic number.

It is an amenable number.

85544005 is a deficient number, since it is larger than the sum of its proper divisors (17108807).

85544005 is a wasteful number, since it uses less digits than its factorization.

85544005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17108806.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 85544005 is about 9249.0002162396. Note that the first 3 decimals coincide. The cubic root of 85544005 is about 440.6189721691.

The spelling of 85544005 in words is "eighty-five million, five hundred forty-four thousand, five".