855147 has 4 divisors (see below), whose sum is σ = 1140200. Its totient is φ = 570096.

The previous prime is 855143. The next prime is 855187. The reversal of 855147 is 741558.

855147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 855147 - 2² = 855143 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142522 + ... + 142527.

It is an arithmetic number, because the mean of its divisors is an integer number (285050).

2⁸⁵⁵¹⁴⁷ is an apocalyptic number.

855147 is a deficient number, since it is larger than the sum of its proper divisors (285053).

855147 is a wasteful number, since it uses less digits than its factorization.

855147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285052.

The product of its digits is 5600, while the sum is 30.

The square root of 855147 is about 924.7415855254. The cubic root of 855147 is about 94.9176386812.

It can be divided in two parts, 8 and 55147, that added together give a palindrome (55155).

The spelling of 855147 in words is "eight hundred fifty-five thousand, one hundred forty-seven".