85755857 has 16 divisors (see below), whose sum is σ = 95256000. Its totient is φ = 76554240.

The previous prime is 85755853. The next prime is 85755877. The reversal of 85755857 is 75855758.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85755857 - 2² = 85755853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85755853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190769 + ... + 191217.

It is an arithmetic number, because the mean of its divisors is an integer number (5953500).

Almost surely, 2^85755857 is an apocalyptic number.

It is an amenable number.

85755857 is a deficient number, since it is larger than the sum of its proper divisors (9500143).

85755857 is a wasteful number, since it uses less digits than its factorization.

85755857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its digits is 1960000, while the sum is 50.

The square root of 85755857 is about 9260.4458316001. The cubic root of 85755857 is about 440.9824071769.

Subtracting from 85755857 its reverse (75855758), we obtain a palindrome (9900099).

The spelling of 85755857 in words is "eighty-five million, seven hundred fifty-five thousand, eight hundred fifty-seven".