85555547 has 16 divisors (see below), whose sum is σ = 107136000. Its totient is φ = 66373440.

The previous prime is 85555529. The next prime is 85555553. The reversal of 85555547 is 74555558.

It is not a de Polignac number, because 85555547 - 2²⁴ = 68778331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85555498 and 85555507.

It is not an unprimeable number, because it can be changed into a prime (85525547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16079 + ... + 20727.

It is an arithmetic number, because the mean of its divisors is an integer number (6696000).

Almost surely, 2^85555547 is an apocalyptic number.

85555547 is a deficient number, since it is larger than the sum of its proper divisors (21580453).

85555547 is a wasteful number, since it uses less digits than its factorization.

85555547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906.

The product of its digits is 700000, while the sum is 44.

The square root of 85555547 is about 9249.6241545265. The cubic root of 85555547 is about 440.6387880735.

It can be divided in two parts, 8 and 5555547, that added together give a palindrome (5555555).

The spelling of 85555547 in words is "eighty-five million, five hundred fifty-five thousand, five hundred forty-seven".