85555558 has 8 divisors (see below), whose sum is σ = 140000040. Its totient is φ = 38888880.

The previous prime is 85555553. The next prime is 85555571.

85555558 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×85555558³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85555553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1944423 + ... + 1944466.

It is an arithmetic number, because the mean of its divisors is an integer number (17500005).

Almost surely, 2^85555558 is an apocalyptic number.

85555558 is a deficient number, since it is larger than the sum of its proper divisors (54444482).

85555558 is a wasteful number, since it uses less digits than its factorization.

85555558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888902.

The product of its digits is 1000000, while the sum is 46.

The square root of 85555558 is about 9249.6247491452. The cubic root of 85555558 is about 440.6388069580.

The spelling of 85555558 in words is "eighty-five million, five hundred fifty-five thousand, five hundred fifty-eight".