51087184 has 20 divisors (see below), whose sum is σ = 100004884. Its totient is φ = 25279488.

The previous prime is 51087173. The next prime is 51087191. The reversal of 51087184 is 48178015.

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 25806400 = 5028^2 + 5080^2 .

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14907 + ... + 18010.

Almost surely, 2^51087184 is an apocalyptic number.

It is an amenable number.

51087184 is a deficient number, since it is larger than the sum of its proper divisors (48917700).

51087184 is a wasteful number, since it uses less digits than its factorization.

51087184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33022 (or 33016 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 51087184 is about 7147.5299229874. The cubic root of 51087184 is about 371.0541741036.

The spelling of 51087184 in words is "fifty-one million, eighty-seven thousand, one hundred eighty-four".