2050861 has 4 divisors (see below), whose sum is σ = 2100924. Its totient is φ = 2000800.

The previous prime is 2050849. The next prime is 2050877. The reversal of 2050861 is 1680502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 656100 + 1394761 = 810^2 + 1181^2 .

It is not a de Polignac number, because 2050861 - 2⁷ = 2050733 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2050831) 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, 24970 + ... + 25051.

It is an arithmetic number, because the mean of its divisors is an integer number (525231).

2^2050861 is an apocalyptic number.

It is an amenable number.

2050861 is a deficient number, since it is larger than the sum of its proper divisors (50063).

2050861 is an equidigital number, since it uses as much as digits as its factorization.

2050861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50062.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2050861 is about 1432.0827490058. The cubic root of 2050861 is about 127.0511914653.

The spelling of 2050861 in words is "two million, fifty thousand, eight hundred sixty-one".