51189166 has 8 divisors (see below), whose sum is σ = 87752880. Its totient is φ = 21938208.

The previous prime is 51189161. The next prime is 51189179. The reversal of 51189166 is 66198115.

51189166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51189161) 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, 1828171 + ... + 1828198.

It is an arithmetic number, because the mean of its divisors is an integer number (10969110).

Almost surely, 2^51189166 is an apocalyptic number.

51189166 is a deficient number, since it is larger than the sum of its proper divisors (36563714).

51189166 is a wasteful number, since it uses less digits than its factorization.

51189166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656378.

The product of its digits is 12960, while the sum is 37.

The square root of 51189166 is about 7154.6604391823. The cubic root of 51189166 is about 371.3009137095.

The spelling of 51189166 in words is "fifty-one million, one hundred eighty-nine thousand, one hundred sixty-six".