51355289 has 2 divisors, whose sum is σ = 51355290. Its totient is φ = 51355288.

The previous prime is 51355261. The next prime is 51355307. The reversal of 51355289 is 98255315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27667600 + 23687689 = 5260^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 51355289 - 2⁸ = 51355033 is a prime.

It is not a weakly prime, because it can be changed into another prime (51355489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25677644 + 25677645.

It is an arithmetic number, because the mean of its divisors is an integer number (25677645).

Almost surely, 2^51355289 is an apocalyptic number.

It is an amenable number.

51355289 is a deficient number, since it is larger than the sum of its proper divisors (1).

51355289 is an equidigital number, since it uses as much as digits as its factorization.

51355289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 38.

The square root of 51355289 is about 7166.2604613564. The cubic root of 51355289 is about 371.7021380433.

The spelling of 51355289 in words is "fifty-one million, three hundred fifty-five thousand, two hundred eighty-nine".