85755257 has 8 divisors (see below), whose sum is σ = 98922816. Its totient is φ = 72816912.

The previous prime is 85755251. The next prime is 85755281. The reversal of 85755257 is 75255758.

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

It is not a de Polignac number, because 85755257 - 2¹⁰ = 85754233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85755251) 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 7 ways as a sum of consecutive naturals, for example, 56498 + ... + 57995.

It is an arithmetic number, because the mean of its divisors is an integer number (12365352).

Almost surely, 2^85755257 is an apocalyptic number.

It is an amenable number.

85755257 is a deficient number, since it is larger than the sum of its proper divisors (13167559).

85755257 is a wasteful number, since it uses less digits than its factorization.

85755257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114607.

The product of its digits is 490000, while the sum is 44.

The square root of 85755257 is about 9260.4134356950. The cubic root of 85755257 is about 440.9813787144.

The spelling of 85755257 in words is "eighty-five million, seven hundred fifty-five thousand, two hundred fifty-seven".