2855189 has 2 divisors, whose sum is σ = 2855190. Its totient is φ = 2855188.

The previous prime is 2855183. The next prime is 2855207. The reversal of 2855189 is 9815582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 708964 = 1465^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 2855189 - 2⁸ = 2854933 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2855183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427594 + 1427595.

It is an arithmetic number, because the mean of its divisors is an integer number (1427595).

2^2855189 is an apocalyptic number.

It is an amenable number.

2855189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855189 is an equidigital number, since it uses as much as digits as its factorization.

2855189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 38.

The square root of 2855189 is about 1689.7304518769. The cubic root of 2855189 is about 141.8659880942.

The spelling of 2855189 in words is "two million, eight hundred fifty-five thousand, one hundred eighty-nine".