2053891 has 4 divisors (see below), whose sum is σ = 2347312. Its totient is φ = 1760472.

The previous prime is 2053873. The next prime is 2053897. The reversal of 2053891 is 1983502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1983502 = 2 ⋅991751.

It is not a de Polignac number, because 2053891 - 2⁵ = 2053859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2053897) 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, 146700 + ... + 146713.

It is an arithmetic number, because the mean of its divisors is an integer number (586828).

2^2053891 is an apocalyptic number.

2053891 is a deficient number, since it is larger than the sum of its proper divisors (293421).

2053891 is an equidigital number, since it uses as much as digits as its factorization.

2053891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293420.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2053891 is about 1433.1402583139. The cubic root of 2053891 is about 127.1137303501.

It can be divided in two parts, 205 and 3891, that added together give a 12-th power (4096 = 2¹²).

The spelling of 2053891 in words is "two million, fifty-three thousand, eight hundred ninety-one".