85155887 has 8 divisors (see below), whose sum is σ = 86526720. Its totient is φ = 83790720.

The previous prime is 85155883. The next prime is 85155901. The reversal of 85155887 is 78855158.

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

It is a cyclic number.

It is not a de Polignac number, because 85155887 - 2² = 85155883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85155883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36914 + ... + 39152.

It is an arithmetic number, because the mean of its divisors is an integer number (10815840).

Almost surely, 2^85155887 is an apocalyptic number.

85155887 is a deficient number, since it is larger than the sum of its proper divisors (1370833).

85155887 is a wasteful number, since it uses less digits than its factorization.

85155887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833.

The product of its digits is 448000, while the sum is 47.

The square root of 85155887 is about 9227.9947442551. The cubic root of 85155887 is about 439.9515907485.

The spelling of 85155887 in words is "eighty-five million, one hundred fifty-five thousand, eight hundred eighty-seven".