51311884 has 12 divisors (see below), whose sum is σ = 96703264. Its totient is φ = 23682384.

The previous prime is 51311881. The next prime is 51311891. The reversal of 51311884 is 48811315.

51311884 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 (51311881) 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, 493332 + ... + 493435.

Almost surely, 2^51311884 is an apocalyptic number.

It is an amenable number.

51311884 is a deficient number, since it is larger than the sum of its proper divisors (45391380).

51311884 is a wasteful number, since it uses less digits than its factorization.

51311884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986784 (or 986782 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

The square root of 51311884 is about 7163.2313937217. The cubic root of 51311884 is about 371.5973888272.

The spelling of 51311884 in words is "fifty-one million, three hundred eleven thousand, eight hundred eighty-four".