51423263 has 2 divisors, whose sum is σ = 51423264. Its totient is φ = 51423262.

The previous prime is 51423259. The next prime is 51423277. The reversal of 51423263 is 36232415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51423263 - 2² = 51423259 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51423763) 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, 25711631 + 25711632.

It is an arithmetic number, because the mean of its divisors is an integer number (25711632).

Almost surely, 2^51423263 is an apocalyptic number.

51423263 is a deficient number, since it is larger than the sum of its proper divisors (1).

51423263 is an equidigital number, since it uses as much as digits as its factorization.

51423263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 51423263 is about 7171.0015339560. The cubic root of 51423263 is about 371.8660610614.

Adding to 51423263 its reverse (36232415), we get a palindrome (87655678).

The spelling of 51423263 in words is "fifty-one million, four hundred twenty-three thousand, two hundred sixty-three".