855443254 has 4 divisors (see below), whose sum is σ = 1283164884. Its totient is φ = 427721626.

The previous prime is 855443191. The next prime is 855443257. The reversal of 855443254 is 452344558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 452344558 = 2 ⋅226172279.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855443257) by changing a digit.

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 as a sum of consecutive naturals, namely, 213860812 + ... + 213860815.

It is an arithmetic number, because the mean of its divisors is an integer number (320791221).

Almost surely, 2^855443254 is an apocalyptic number.

855443254 is a deficient number, since it is larger than the sum of its proper divisors (427721630).

855443254 is a wasteful number, since it uses less digits than its factorization.

855443254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427721629.

The product of its digits is 384000, while the sum is 40.

The square root of 855443254 is about 29247.9615358062. The cubic root of 855443254 is about 949.2859838891.

The spelling of 855443254 in words is "eight hundred fifty-five million, four hundred forty-three thousand, two hundred fifty-four".