51303205 has 8 divisors (see below), whose sum is σ = 62725752. Its totient is φ = 40267968.

The previous prime is 51303199. The next prime is 51303209. The reversal of 51303205 is 50230315.

51303205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11082241 + 40220964 = 3329^2 + 6342^2 .

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 51303205 - 2¹⁵ = 51270437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51303209) 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 7 ways as a sum of consecutive naturals, for example, 96534 + ... + 97063.

It is an arithmetic number, because the mean of its divisors is an integer number (7840719).

Almost surely, 2^51303205 is an apocalyptic number.

It is an amenable number.

51303205 is a deficient number, since it is larger than the sum of its proper divisors (11422547).

51303205 is a wasteful number, since it uses less digits than its factorization.

51303205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193655.

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

The square root of 51303205 is about 7162.6255660896. The cubic root of 51303205 is about 371.5764367245.

The spelling of 51303205 in words is "fifty-one million, three hundred three thousand, two hundred five".