85515556 has 24 divisors (see below), whose sum is σ = 171307136. Its totient is φ = 36590400.

The previous prime is 85515527. The next prime is 85515569. The reversal of 85515556 is 65551558.

It is a happy number.

It is a super-3 number, since 3×85515556³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18256 + ... + 22456.

Almost surely, 2^85515556 is an apocalyptic number.

It is an amenable number.

85515556 is an abundant number, since it is smaller than the sum of its proper divisors (85791580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85515556 is a wasteful number, since it uses less digits than its factorization.

85515556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939 (or 4937 counting only the distinct ones).

The product of its digits is 150000, while the sum is 40.

The square root of 85515556 is about 9247.4621383383. The cubic root of 85515556 is about 440.5701218377.

The spelling of 85515556 in words is "eighty-five million, five hundred fifteen thousand, five hundred fifty-six".