51267289 has 2 divisors, whose sum is σ = 51267290. Its totient is φ = 51267288.

The previous prime is 51267277. The next prime is 51267317. The reversal of 51267289 is 98276215.

51267289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46785600 + 4481689 = 6840^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 51267289 - 2¹¹ = 51265241 is a prime.

It is not a weakly prime, because it can be changed into another prime (51267239) 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, 25633644 + 25633645.

It is an arithmetic number, because the mean of its divisors is an integer number (25633645).

Almost surely, 2^51267289 is an apocalyptic number.

It is an amenable number.

51267289 is a deficient number, since it is larger than the sum of its proper divisors (1).

51267289 is an equidigital number, since it uses as much as digits as its factorization.

51267289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 51267289 is about 7160.1179459559. The cubic root of 51267289 is about 371.4897062445.

The spelling of 51267289 in words is "fifty-one million, two hundred sixty-seven thousand, two hundred eighty-nine".