51008263 has 2 divisors, whose sum is σ = 51008264. Its totient is φ = 51008262.

The previous prime is 51008257. The next prime is 51008281. The reversal of 51008263 is 36280015.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51008263 - 2¹³ = 51000071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51003263) 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 as a sum of consecutive naturals, namely, 25504131 + 25504132.

It is an arithmetic number, because the mean of its divisors is an integer number (25504132).

Almost surely, 2^51008263 is an apocalyptic number.

51008263 is a deficient number, since it is larger than the sum of its proper divisors (1).

51008263 is an equidigital number, since it uses as much as digits as its factorization.

51008263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51008263 is about 7142.0069308283. The cubic root of 51008263 is about 370.8630037896.

Adding to 51008263 its reverse (36280015), we get a palindrome (87288278).

The spelling of 51008263 in words is "fifty-one million, eight thousand, two hundred sixty-three".