51230252123 has 2 divisors, whose sum is σ = 51230252124. Its totient is φ = 51230252122.

The previous prime is 51230252111. The next prime is 51230252201. The reversal of 51230252123 is 32125203215.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51230252123 - 2⁸ = 51230251867 is a prime.

It is a super-2 number, since 2×51230252123² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 51230252092 and 51230252101.

It is not a weakly prime, because it can be changed into another prime (51230242123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25615126061 + 25615126062.

It is an arithmetic number, because the mean of its divisors is an integer number (25615126062).

Almost surely, 2^51230252123 is an apocalyptic number.

51230252123 is a deficient number, since it is larger than the sum of its proper divisors (1).

51230252123 is an equidigital number, since it uses as much as digits as its factorization.

51230252123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 51230252123 its reverse (32125203215), we get a palindrome (83355455338).

The spelling of 51230252123 in words is "fifty-one billion, two hundred thirty million, two hundred fifty-two thousand, one hundred twenty-three".