51168087 has 6 divisors (see below), whose sum is σ = 73909472. Its totient is φ = 34112052.

The previous prime is 51168071. The next prime is 51168097. The reversal of 51168087 is 78086115.

51168087 is a `hidden beast` number, since 511 + 68 + 0 + 87 = 666.

51168087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51168087 - 2⁴ = 51168071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51168017) 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 5 ways as a sum of consecutive naturals, for example, 2842663 + ... + 2842680.

Almost surely, 2^51168087 is an apocalyptic number.

51168087 is a deficient number, since it is larger than the sum of its proper divisors (22741385).

51168087 is a wasteful number, since it uses less digits than its factorization.

51168087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685349 (or 5685346 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 51168087 is about 7153.1871917349. The cubic root of 51168087 is about 371.2499411625.

It can be divided in two parts, 5116 and 8087, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 51168087 in words is "fifty-one million, one hundred sixty-eight thousand, eighty-seven".