51181752 has 64 divisors (see below), whose sum is σ = 133516800. Its totient is φ = 16329600.

The previous prime is 51181727. The next prime is 51181771. The reversal of 51181752 is 25718115.

51181752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 104853 + ... + 105339.

It is an arithmetic number, because the mean of its divisors is an integer number (2086200).

Almost surely, 2^51181752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51181752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66758400).

51181752 is an abundant number, since it is smaller than the sum of its proper divisors (82335048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51181752 is a wasteful number, since it uses less digits than its factorization.

51181752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 672 counting only the distinct ones).

The product of its digits is 2800, while the sum is 30.

The square root of 51181752 is about 7154.1422965999. The cubic root of 51181752 is about 371.2829870132.

Adding to 51181752 its reverse (25718115), we get a palindrome (76899867).

The spelling of 51181752 in words is "fifty-one million, one hundred eighty-one thousand, seven hundred fifty-two".