51320132 has 6 divisors (see below), whose sum is σ = 89810238. Its totient is φ = 25660064.

The previous prime is 51320131. The next prime is 51320141. The reversal of 51320132 is 23102315.

It can be written as a sum of positive squares in only one way, i.e., 40653376 + 10666756 = 6376^2 + 3266^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51320132.

It is not an unprimeable number, because it can be changed into a prime (51320131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415013 + ... + 6415020.

It is an arithmetic number, because the mean of its divisors is an integer number (14968373).

Almost surely, 2^51320132 is an apocalyptic number.

It is an amenable number.

51320132 is a deficient number, since it is larger than the sum of its proper divisors (38490106).

51320132 is a wasteful number, since it uses less digits than its factorization.

51320132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12830037 (or 12830035 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51320132 is about 7163.8070884133. The cubic root of 51320132 is about 371.6172982570.

Adding to 51320132 its reverse (23102315), we get a palindrome (74422447).

The spelling of 51320132 in words is "fifty-one million, three hundred twenty thousand, one hundred thirty-two".