51917023 has 2 divisors, whose sum is σ = 51917024. Its totient is φ = 51917022.

The previous prime is 51917017. The next prime is 51917057. The reversal of 51917023 is 32071915.

51917023 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 51917023 - 2⁹ = 51916511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51916982 and 51917000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51917123) 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, 25958511 + 25958512.

It is an arithmetic number, because the mean of its divisors is an integer number (25958512).

Almost surely, 2^51917023 is an apocalyptic number.

51917023 is a deficient number, since it is larger than the sum of its proper divisors (1).

51917023 is an equidigital number, since it uses as much as digits as its factorization.

51917023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 51917023 is about 7205.3468341226. The cubic root of 51917023 is about 373.0524762832.

Adding to 51917023 its reverse (32071915), we get a palindrome (83988938).

The spelling of 51917023 in words is "fifty-one million, nine hundred seventeen thousand, twenty-three".