51143 has 4 divisors (see below), whose sum is σ = 51600. Its totient is φ = 50688.

The previous prime is 51137. The next prime is 51151. The reversal of 51143 is 34115.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34115 = 5 ⋅6823.

It is a cyclic number.

It is not a de Polignac number, because 51143 - 2¹⁰ = 50119 is a prime.

It is a Duffinian number.

51143 is an undulating number in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51133) 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, 71 + ... + 327.

It is an arithmetic number, because the mean of its divisors is an integer number (12900).

2⁵¹¹⁴³ is an apocalyptic number.

51143 is a deficient number, since it is larger than the sum of its proper divisors (457).

51143 is a wasteful number, since it uses less digits than its factorization.

51143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 60, while the sum is 14.

The square root of 51143 is about 226.1481815094. The cubic root of 51143 is about 37.1189258353.

Adding to 51143 its reverse (34115), we get a palindrome (85258).

The spelling of 51143 in words is "fifty-one thousand, one hundred forty-three".