2855801 has 4 divisors (see below), whose sum is σ = 3075492. Its totient is φ = 2636112.

The previous prime is 2855791. The next prime is 2855807. The reversal of 2855801 is 1085582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1085582 = 2 ⋅542791.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 2131600 = 851^2 + 1460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2855807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109826 + ... + 109851.

It is an arithmetic number, because the mean of its divisors is an integer number (768873).

2^2855801 is an apocalyptic number.

It is an amenable number.

2855801 is a deficient number, since it is larger than the sum of its proper divisors (219691).

2855801 is a wasteful number, since it uses less digits than its factorization.

2855801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219690.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 2855801 is about 1689.9115361462. The cubic root of 2855801 is about 141.8761235332.

The spelling of 2855801 in words is "two million, eight hundred fifty-five thousand, eight hundred one".