2855147 has 4 divisors (see below), whose sum is σ = 2858856. Its totient is φ = 2851440.

The previous prime is 2855141. The next prime is 2855159. The reversal of 2855147 is 7415582.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7415582 = 2 ⋅3707791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855147 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2855141) 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, 218 + ... + 2399.

It is an arithmetic number, because the mean of its divisors is an integer number (714714).

2^2855147 is an apocalyptic number.

2855147 is a deficient number, since it is larger than the sum of its proper divisors (3709).

2855147 is a wasteful number, since it uses less digits than its factorization.

2855147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708.

The product of its digits is 11200, while the sum is 32.

The square root of 2855147 is about 1689.7180238134. The cubic root of 2855147 is about 141.8652924717.

The spelling of 2855147 in words is "two million, eight hundred fifty-five thousand, one hundred forty-seven".