51230305 has 16 divisors (see below), whose sum is σ = 71224704. Its totient is φ = 34646400.

The previous prime is 51230303. The next prime is 51230323. The reversal of 51230305 is 50303215.

51230305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51230305 - 2¹ = 51230303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51230303) 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 in 15 ways as a sum of consecutive naturals, for example, 7471 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (4451544).

Almost surely, 2^51230305 is an apocalyptic number.

It is an amenable number.

51230305 is a deficient number, since it is larger than the sum of its proper divisors (19994399).

51230305 is a wasteful number, since it uses less digits than its factorization.

51230305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20136.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 51230305 is about 7157.5348409910. The cubic root of 51230305 is about 371.4003544005.

The spelling of 51230305 in words is "fifty-one million, two hundred thirty thousand, three hundred five".