85815755 has 8 divisors (see below), whose sum is σ = 103033392. Its totient is φ = 68616288.

The previous prime is 85815739. The next prime is 85815773. The reversal of 85815755 is 55751858.

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 85815755 - 2⁴ = 85815739 is a prime.

It is a Duffinian number.

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, 10217 + ... + 16613.

It is an arithmetic number, because the mean of its divisors is an integer number (12879174).

Almost surely, 2^85815755 is an apocalyptic number.

85815755 is a deficient number, since it is larger than the sum of its proper divisors (17217637).

85815755 is a wasteful number, since it uses less digits than its factorization.

85815755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085.

The product of its digits is 280000, while the sum is 44.

The square root of 85815755 is about 9263.6793446233. The cubic root of 85815755 is about 441.0850544585.

The spelling of 85815755 in words is "eighty-five million, eight hundred fifteen thousand, seven hundred fifty-five".