51550442023 has 2 divisors, whose sum is σ = 51550442024. Its totient is φ = 51550442022.

The previous prime is 51550442017. The next prime is 51550442057. The reversal of 51550442023 is 32024405515.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51550442023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51550442093) 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, 25775221011 + 25775221012.

It is an arithmetic number, because the mean of its divisors is an integer number (25775221012).

Almost surely, 2^51550442023 is an apocalyptic number.

51550442023 is a deficient number, since it is larger than the sum of its proper divisors (1).

51550442023 is an equidigital number, since it uses as much as digits as its factorization.

51550442023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 51550442023 its reverse (32024405515), we get a palindrome (83574847538).

The spelling of 51550442023 in words is "fifty-one billion, five hundred fifty million, four hundred forty-two thousand, twenty-three".