51030823 has 2 divisors, whose sum is σ = 51030824. Its totient is φ = 51030822.

The previous prime is 51030799. The next prime is 51030839. The reversal of 51030823 is 32803015.

51030823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51030823 - 2²¹ = 48933671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51030794 and 51030803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51030893) 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, 25515411 + 25515412.

It is an arithmetic number, because the mean of its divisors is an integer number (25515412).

Almost surely, 2^51030823 is an apocalyptic number.

51030823 is a deficient number, since it is larger than the sum of its proper divisors (1).

51030823 is an equidigital number, since it uses as much as digits as its factorization.

51030823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 51030823 is about 7143.5861442276. The cubic root of 51030823 is about 370.9176709860.

Adding to 51030823 its reverse (32803015), we get a palindrome (83833838).

The spelling of 51030823 in words is "fifty-one million, thirty thousand, eight hundred twenty-three".