53851143 has 16 divisors (see below), whose sum is σ = 73566720. Its totient is φ = 35023296.

The previous prime is 53851139. The next prime is 53851153. The reversal of 53851143 is 34115835.

53851143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53851143 - 2² = 53851139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53851143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53851103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86688 + ... + 87306.

It is an arithmetic number, because the mean of its divisors is an integer number (4597920).

Almost surely, 2^53851143 is an apocalyptic number.

53851143 is a deficient number, since it is larger than the sum of its proper divisors (19715577).

53851143 is a wasteful number, since it uses less digits than its factorization.

53851143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its digits is 7200, while the sum is 30.

The square root of 53851143 is about 7338.3338027103. Note that the first 3 decimals coincide. The cubic root of 53851143 is about 377.6286841083.

Adding to 53851143 its reverse (34115835), we get a palindrome (87966978).

It can be divided in two parts, 538 and 51143, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 53851143 in words is "fifty-three million, eight hundred fifty-one thousand, one hundred forty-three".