51348709 has 2 divisors, whose sum is σ = 51348710. Its totient is φ = 51348708.

The previous prime is 51348683. The next prime is 51348727. The reversal of 51348709 is 90784315.

51348709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32832900 + 18515809 = 5730^2 + 4303^2 .

It is a cyclic number.

It is not a de Polignac number, because 51348709 - 2⁵ = 51348677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51348799) 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, 25674354 + 25674355.

It is an arithmetic number, because the mean of its divisors is an integer number (25674355).

Almost surely, 2^51348709 is an apocalyptic number.

It is an amenable number.

51348709 is a deficient number, since it is larger than the sum of its proper divisors (1).

51348709 is an equidigital number, since it uses as much as digits as its factorization.

51348709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 51348709 is about 7165.8013508609. The cubic root of 51348709 is about 371.6862623365.

The spelling of 51348709 in words is "fifty-one million, three hundred forty-eight thousand, seven hundred nine".