51181352 has 16 divisors (see below), whose sum is σ = 98197440. Its totient is φ = 24995376.

The previous prime is 51181267. The next prime is 51181357. The reversal of 51181352 is 25318115.

It is a happy number.

51181352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51181357) 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 3 ways as a sum of consecutive naturals, for example, 74048 + ... + 74735.

It is an arithmetic number, because the mean of its divisors is an integer number (6137340).

Almost surely, 2^51181352 is an apocalyptic number.

It is an amenable number.

51181352 is a deficient number, since it is larger than the sum of its proper divisors (47016088).

51181352 is a wasteful number, since it uses less digits than its factorization.

51181352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148832 (or 148828 counting only the distinct ones).

The product of its digits is 1200, while the sum is 26.

The square root of 51181352 is about 7154.1143407133. The cubic root of 51181352 is about 371.2820197832.

Adding to 51181352 its reverse (25318115), we get a palindrome (76499467).

The spelling of 51181352 in words is "fifty-one million, one hundred eighty-one thousand, three hundred fifty-two".