51788305 has 8 divisors (see below), whose sum is σ = 62231400. Its totient is φ = 41373696.

The previous prime is 51788291. The next prime is 51788309. The reversal of 51788305 is 50388715.

It can be written as a sum of positive squares in 4 ways, for example, as 5602689 + 46185616 = 2367^2 + 6796^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51788305 - 2⁹ = 51787793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51788309) 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 in 7 ways as a sum of consecutive naturals, for example, 2890 + ... + 10579.

It is an arithmetic number, because the mean of its divisors is an integer number (7778925).

Almost surely, 2^51788305 is an apocalyptic number.

It is an amenable number.

51788305 is a deficient number, since it is larger than the sum of its proper divisors (10443095).

51788305 is a wasteful number, since it uses less digits than its factorization.

51788305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 51788305 is about 7196.4091740256. The cubic root of 51788305 is about 372.7439178387.

The spelling of 51788305 in words is "fifty-one million, seven hundred eighty-eight thousand, three hundred five".