51444109 has 2 divisors, whose sum is σ = 51444110. Its totient is φ = 51444108.

The previous prime is 51444103. The next prime is 51444119. The reversal of 51444109 is 90144415.

51444109 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., 42575625 + 8868484 = 6525^2 + 2978^2 .

It is a cyclic number.

It is not a de Polignac number, because 51444109 - 2⁹ = 51443597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51444103) 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, 25722054 + 25722055.

It is an arithmetic number, because the mean of its divisors is an integer number (25722055).

Almost surely, 2^51444109 is an apocalyptic number.

It is an amenable number.

51444109 is a deficient number, since it is larger than the sum of its proper divisors (1).

51444109 is an equidigital number, since it uses as much as digits as its factorization.

51444109 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 28.

The square root of 51444109 is about 7172.4548796071. The cubic root of 51444109 is about 371.9163033849.

The spelling of 51444109 in words is "fifty-one million, four hundred forty-four thousand, one hundred nine".