51422189 has 16 divisors (see below), whose sum is σ = 66622080. Its totient is φ = 38543040.

The previous prime is 51422171. The next prime is 51422201. The reversal of 51422189 is 98122415.

51422189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51422189 - 2⁸ = 51421933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51422989) 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 15 ways as a sum of consecutive naturals, for example, 13142 + ... + 16599.

It is an arithmetic number, because the mean of its divisors is an integer number (4163880).

Almost surely, 2^51422189 is an apocalyptic number.

It is an amenable number.

51422189 is a deficient number, since it is larger than the sum of its proper divisors (15199891).

51422189 is a wasteful number, since it uses less digits than its factorization.

51422189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29780.

The product of its digits is 5760, while the sum is 32.

The square root of 51422189 is about 7170.9266486278. The cubic root of 51422189 is about 371.8634721752.

The spelling of 51422189 in words is "fifty-one million, four hundred twenty-two thousand, one hundred eighty-nine".