51731043 has 16 divisors (see below), whose sum is σ = 84892416. Its totient is φ = 27286560.

The previous prime is 51731039. The next prime is 51731047. The reversal of 51731043 is 34013715.

51731043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51731039) and next prime (51731047).

It is not a de Polignac number, because 51731043 - 2² = 51731039 is a prime.

It is a super-2 number, since 2×51731043² = 5352201619735698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51731047) 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, 94473 + ... + 95018.

It is an arithmetic number, because the mean of its divisors is an integer number (5305776).

Almost surely, 2^51731043 is an apocalyptic number.

51731043 is a deficient number, since it is larger than the sum of its proper divisors (33161373).

51731043 is a wasteful number, since it uses less digits than its factorization.

51731043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189514.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 51731043 is about 7192.4295616989. The cubic root of 51731043 is about 372.6064869797.

Adding to 51731043 its reverse (34013715), we get a palindrome (85744758).

It can be divided in two parts, 5173 and 1043, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 51731043 in words is "fifty-one million, seven hundred thirty-one thousand, forty-three".