51005027305 has 8 divisors (see below), whose sum is σ = 63316585800. Its totient is φ = 39396986496.

The previous prime is 51005027273. The next prime is 51005027321. The reversal of 51005027305 is 50372050015.

It can be written as a sum of positive squares in 4 ways, for example, as 17819847081 + 33185180224 = 133491^2 + 182168^2 .

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 51005027305 - 2⁵ = 51005027273 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175879260 + ... + 175879549.

It is an arithmetic number, because the mean of its divisors is an integer number (7914573225).

Almost surely, 2^51005027305 is an apocalyptic number.

It is an amenable number.

51005027305 is a deficient number, since it is larger than the sum of its proper divisors (12311558495).

51005027305 is a wasteful number, since it uses less digits than its factorization.

51005027305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351758843.

The product of its (nonzero) digits is 5250, while the sum is 28.

The spelling of 51005027305 in words is "fifty-one billion, five million, twenty-seven thousand, three hundred five".