51304663 has 2 divisors, whose sum is σ = 51304664. Its totient is φ = 51304662.

The previous prime is 51304661. The next prime is 51304679. The reversal of 51304663 is 36640315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51304663 - 2¹ = 51304661 is a prime.

Together with 51304661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51304661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25652331 + 25652332.

It is an arithmetic number, because the mean of its divisors is an integer number (25652332).

Almost surely, 2^51304663 is an apocalyptic number.

51304663 is a deficient number, since it is larger than the sum of its proper divisors (1).

51304663 is an equidigital number, since it uses as much as digits as its factorization.

51304663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 51304663 is about 7162.7273436869. The cubic root of 51304663 is about 371.5799566691.

Adding to 51304663 its reverse (36640315), we get a palindrome (87944978).

The spelling of 51304663 in words is "fifty-one million, three hundred four thousand, six hundred sixty-three".