51748 has 12 divisors (see below), whose sum is σ = 96012. Its totient is φ = 24320.

The previous prime is 51721. The next prime is 51749. The reversal of 51748 is 84715.

51748 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 2 ways, for example, as 14884 + 36864 = 122^2 + 192^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51749) by changing a digit.

51748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313 + ... + 448.

It is an arithmetic number, because the mean of its divisors is an integer number (8001).

2⁵¹⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

51748 is a deficient number, since it is larger than the sum of its proper divisors (44264).

51748 is a wasteful number, since it uses less digits than its factorization.

51748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 780 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 51748 is about 227.4818674093. The cubic root of 51748 is about 37.2647194954.

It can be divided in two parts, 517 and 48, that added together give a palindrome (565).

The spelling of 51748 in words is "fifty-one thousand, seven hundred forty-eight".