51022289 has 2 divisors, whose sum is σ = 51022290. Its totient is φ = 51022288.

The previous prime is 51022261. The next prime is 51022319. The reversal of 51022289 is 98222015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44089600 + 6932689 = 6640^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 51022289 - 2⁸ = 51022033 is a prime.

It is not a weakly prime, because it can be changed into another prime (51022259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511144 + 25511145.

It is an arithmetic number, because the mean of its divisors is an integer number (25511145).

Almost surely, 2^51022289 is an apocalyptic number.

It is an amenable number.

51022289 is a deficient number, since it is larger than the sum of its proper divisors (1).

51022289 is an equidigital number, since it uses as much as digits as its factorization.

51022289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 51022289 is about 7142.9888002152. The cubic root of 51022289 is about 370.8969933662.

The spelling of 51022289 in words is "fifty-one million, twenty-two thousand, two hundred eighty-nine".