51332189 has 2 divisors, whose sum is σ = 51332190. Its totient is φ = 51332188.

The previous prime is 51332179. The next prime is 51332221. The reversal of 51332189 is 98123315.

51332189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (51332221) can be obtained adding 51332189 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50623225 + 708964 = 7115^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 51332189 - 2⁸ = 51331933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51332179) 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 as a sum of consecutive naturals, namely, 25666094 + 25666095.

It is an arithmetic number, because the mean of its divisors is an integer number (25666095).

Almost surely, 2^51332189 is an apocalyptic number.

It is an amenable number.

51332189 is a deficient number, since it is larger than the sum of its proper divisors (1).

51332189 is an equidigital number, since it uses as much as digits as its factorization.

51332189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 51332189 is about 7164.6485608158. The cubic root of 51332189 is about 371.6463982012.

The spelling of 51332189 in words is "fifty-one million, three hundred thirty-two thousand, one hundred eighty-nine".