2051873 has 4 divisors (see below), whose sum is σ = 2057748. Its totient is φ = 2046000.

The previous prime is 2051851. The next prime is 2051887. The reversal of 2051873 is 3781502.

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 1682209 + 369664 = 1297^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051873 - 2⁸ = 2051617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051893) 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, 2378 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (514437).

2^2051873 is an apocalyptic number.

It is an amenable number.

2051873 is a deficient number, since it is larger than the sum of its proper divisors (5875).

2051873 is an equidigital number, since it uses as much as digits as its factorization.

2051873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2051873 is about 1432.4360369664. The cubic root of 2051873 is about 127.0720858868.

The spelling of 2051873 in words is "two million, fifty-one thousand, eight hundred seventy-three".