2855843 has 2 divisors, whose sum is σ = 2855844. Its totient is φ = 2855842.

The previous prime is 2855819. The next prime is 2855851. The reversal of 2855843 is 3485582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855843 is a prime.

It is not a weakly prime, because it can be changed into another prime (2855873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427921 + 1427922.

It is an arithmetic number, because the mean of its divisors is an integer number (1427922).

2^2855843 is an apocalyptic number.

2855843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855843 is an equidigital number, since it uses as much as digits as its factorization.

2855843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 35.

The square root of 2855843 is about 1689.9239627865. The cubic root of 2855843 is about 141.8768190494.

The spelling of 2855843 in words is "two million, eight hundred fifty-five thousand, eight hundred forty-three".