51392189 has 8 divisors (see below), whose sum is σ = 54274752. Its totient is φ = 48563680.

The previous prime is 51392183. The next prime is 51392191. The reversal of 51392189 is 98129315.

51392189 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 cyclic number.

It is not a de Polignac number, because 51392189 - 2⁸ = 51391933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51392183) 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 7 ways as a sum of consecutive naturals, for example, 11552 + ... + 15369.

It is an arithmetic number, because the mean of its divisors is an integer number (6784344).

Almost surely, 2^51392189 is an apocalyptic number.

It is an amenable number.

51392189 is a deficient number, since it is larger than the sum of its proper divisors (2882563).

51392189 is a wasteful number, since it uses less digits than its factorization.

51392189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27027.

The product of its digits is 19440, while the sum is 38.

The square root of 51392189 is about 7168.8345635814. The cubic root of 51392189 is about 371.7911423466.

The spelling of 51392189 in words is "fifty-one million, three hundred ninety-two thousand, one hundred eighty-nine".