855297543 has 4 divisors (see below), whose sum is σ = 1140396728. Its totient is φ = 570198360.

The previous prime is 855297503. The next prime is 855297601. The reversal of 855297543 is 345792558.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 855297543 - 2⁶ = 855297479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855297492 and 855297501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855297503) 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 in 3 ways as a sum of consecutive naturals, for example, 142549588 + ... + 142549593.

It is an arithmetic number, because the mean of its divisors is an integer number (285099182).

Almost surely, 2^855297543 is an apocalyptic number.

855297543 is a deficient number, since it is larger than the sum of its proper divisors (285099185).

855297543 is a wasteful number, since it uses less digits than its factorization.

855297543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285099184.

The product of its digits is 1512000, while the sum is 48.

The square root of 855297543 is about 29245.4704698010. The cubic root of 855297543 is about 949.2320822954.

The spelling of 855297543 in words is "eight hundred fifty-five million, two hundred ninety-seven thousand, five hundred forty-three".