51663319 has 2 divisors, whose sum is σ = 51663320. Its totient is φ = 51663318.

The previous prime is 51663307. The next prime is 51663347. The reversal of 51663319 is 91336615.

51663319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51663319 - 2⁷ = 51663191 is a prime.

It is a super-2 number, since 2×51663319² = 5338197060191522, which contains 22 as substring.

It is equal to p_3094837 and since 51663319 and 3094837 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51663389) 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 as a sum of consecutive naturals, namely, 25831659 + 25831660.

It is an arithmetic number, because the mean of its divisors is an integer number (25831660).

Almost surely, 2^51663319 is an apocalyptic number.

51663319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51663319 is an equidigital number, since it uses as much as digits as its factorization.

51663319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 34.

The square root of 51663319 is about 7187.7200140239. The cubic root of 51663319 is about 372.4438159786.

The spelling of 51663319 in words is "fifty-one million, six hundred sixty-three thousand, three hundred nineteen".