85555544 has 16 divisors (see below), whose sum is σ = 164752800. Its totient is φ = 41621472.

The previous prime is 85555529. The next prime is 85555553. The reversal of 85555544 is 44555558.

It is a super-2 number, since 2×85555544² = 14639502218271872, which contains 22 as substring.

It is a nialpdrome in base 10.

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 3 ways as a sum of consecutive naturals, for example, 144224 + ... + 144815.

It is an arithmetic number, because the mean of its divisors is an integer number (10297050).

Almost surely, 2^85555544 is an apocalyptic number.

It is an amenable number.

85555544 is a deficient number, since it is larger than the sum of its proper divisors (79197256).

85555544 is a wasteful number, since it uses less digits than its factorization.

85555544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289082 (or 289078 counting only the distinct ones).

The product of its digits is 400000, while the sum is 41.

The square root of 85555544 is about 9249.6239923577. The cubic root of 85555544 is about 440.6387829232.

It can be divided in two parts, 8555554 and 4, that added together give a palindrome (8555558).

The spelling of 85555544 in words is "eighty-five million, five hundred fifty-five thousand, five hundred forty-four".