855307851 has 16 divisors (see below), whose sum is σ = 1153450368. Its totient is φ = 563720000.

The previous prime is 855307793. The next prime is 855307853. The reversal of 855307851 is 158703558.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 855307851 - 2⁹ = 855307339 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (855307853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99016 + ... + 107306.

It is an arithmetic number, because the mean of its divisors is an integer number (72090648).

Almost surely, 2^855307851 is an apocalyptic number.

855307851 is a deficient number, since it is larger than the sum of its proper divisors (298142517).

855307851 is a wasteful number, since it uses less digits than its factorization.

855307851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682.

The product of its (nonzero) digits is 168000, while the sum is 42.

The square root of 855307851 is about 29245.6467016888. The cubic root of 855307851 is about 949.2358956447.

The spelling of 855307851 in words is "eight hundred fifty-five million, three hundred seven thousand, eight hundred fifty-one".