2051143 has 4 divisors (see below), whose sum is σ = 2098888. Its totient is φ = 2003400.

The previous prime is 2051123. The next prime is 2051167. The reversal of 2051143 is 3411502.

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

It is a cyclic number.

It is not a de Polignac number, because 2051143 - 2⁵ = 2051111 is a prime.

It is a Duffinian number.

2051143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051113) 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, 23808 + ... + 23893.

It is an arithmetic number, because the mean of its divisors is an integer number (524722).

2^2051143 is an apocalyptic number.

2051143 is a deficient number, since it is larger than the sum of its proper divisors (47745).

2051143 is an equidigital number, since it uses as much as digits as its factorization.

2051143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47744.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2051143 is about 1432.1812036192. The cubic root of 2051143 is about 127.0570145145.

Adding to 2051143 its reverse (3411502), we get a palindrome (5462645).

The spelling of 2051143 in words is "two million, fifty-one thousand, one hundred forty-three".