51532143 has 16 divisors (see below), whose sum is σ = 74153856. Its totient is φ = 31644000.

The previous prime is 51532141. The next prime is 51532147. The reversal of 51532143 is 34123515.

51532143 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 51532143 - 2¹ = 51532141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51532141) 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, 21768 + ... + 24018.

It is an arithmetic number, because the mean of its divisors is an integer number (4634616).

Almost surely, 2^51532143 is an apocalyptic number.

51532143 is a deficient number, since it is larger than the sum of its proper divisors (22621713).

51532143 is a wasteful number, since it uses less digits than its factorization.

51532143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854.

The product of its digits is 1800, while the sum is 24.

The square root of 51532143 is about 7178.5892068010. The cubic root of 51532143 is about 372.1283303918.

Adding to 51532143 its reverse (34123515), we get a palindrome (85655658).

The spelling of 51532143 in words is "fifty-one million, five hundred thirty-two thousand, one hundred forty-three".