855287385 has 8 divisors (see below), whose sum is σ = 1368459840. Its totient is φ = 456153264.

The previous prime is 855287359. The next prime is 855287431. The reversal of 855287385 is 583782558.

It is a happy number.

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

It is not a de Polignac number, because 855287385 - 2⁵ = 855287353 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28509565 + ... + 28509594.

It is an arithmetic number, because the mean of its divisors is an integer number (171057480).

Almost surely, 2^855287385 is an apocalyptic number.

It is an amenable number.

855287385 is a deficient number, since it is larger than the sum of its proper divisors (513172455).

855287385 is a wasteful number, since it uses less digits than its factorization.

855287385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57019167.

The product of its digits is 2688000, while the sum is 51.

The square root of 855287385 is about 29245.2968013662. The cubic root of 855287385 is about 949.2283244071.

The spelling of 855287385 in words is "eight hundred fifty-five million, two hundred eighty-seven thousand, three hundred eighty-five".