51712289 has 2 divisors, whose sum is σ = 51712290. Its totient is φ = 51712288.

The previous prime is 51712279. The next prime is 51712321. The reversal of 51712289 is 98221715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 1868689 = 7060^2 + 1367^2 .

It is a cyclic number.

It is not a de Polignac number, because 51712289 - 2¹² = 51708193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51712229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25856144 + 25856145.

It is an arithmetic number, because the mean of its divisors is an integer number (25856145).

Almost surely, 2^51712289 is an apocalyptic number.

It is an amenable number.

51712289 is a deficient number, since it is larger than the sum of its proper divisors (1).

51712289 is an equidigital number, since it uses as much as digits as its factorization.

51712289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 35.

The square root of 51712289 is about 7191.1257115976. The cubic root of 51712289 is about 372.5614546596.

The spelling of 51712289 in words is "fifty-one million, seven hundred twelve thousand, two hundred eighty-nine".