2055859 has 4 divisors (see below), whose sum is σ = 2214016. Its totient is φ = 1897704.

The previous prime is 2055853. The next prime is 2055917. The reversal of 2055859 is 9585502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9585502 = 2 ⋅4792751.

It is a cyclic number.

It is not a de Polignac number, because 2055859 - 2¹¹ = 2053811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2055853) 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, 79059 + ... + 79084.

It is an arithmetic number, because the mean of its divisors is an integer number (553504).

2^2055859 is an apocalyptic number.

2055859 is a deficient number, since it is larger than the sum of its proper divisors (158157).

2055859 is a wasteful number, since it uses less digits than its factorization.

2055859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158156.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 2055859 is about 1433.8266980357. The cubic root of 2055859 is about 127.1543167240.

The spelling of 2055859 in words is "two million, fifty-five thousand, eight hundred fifty-nine".