2051440143 has 4 divisors (see below), whose sum is σ = 2735253528. Its totient is φ = 1367626760.

The previous prime is 2051440129. The next prime is 2051440147. The reversal of 2051440143 is 3410441502.

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 2051440143 - 2¹⁰ = 2051439119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051440147) 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, 341906688 + ... + 341906693.

It is an arithmetic number, because the mean of its divisors is an integer number (683813382).

Almost surely, 2^2051440143 is an apocalyptic number.

2051440143 is a deficient number, since it is larger than the sum of its proper divisors (683813385).

2051440143 is an equidigital number, since it uses as much as digits as its factorization.

2051440143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683813384.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2051440143 is about 45292.8266174678. The cubic root of 2051440143 is about 1270.6314967585.

Adding to 2051440143 its reverse (3410441502), we get a palindrome (5461881645).

The spelling of 2051440143 in words is "two billion, fifty-one million, four hundred forty thousand, one hundred forty-three".