51231124033 has 2 divisors, whose sum is σ = 51231124034. Its totient is φ = 51231124032.

The previous prime is 51231123997. The next prime is 51231124103. The reversal of 51231124033 is 33042113215.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30384673344 + 20846450689 = 174312^2 + 144383^2 .

It is a cyclic number.

It is not a de Polignac number, because 51231124033 - 2¹⁷ = 51230992961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51231123989 and 51231124007.

It is not a weakly prime, because it can be changed into another prime (51231124433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25615562016 + 25615562017.

It is an arithmetic number, because the mean of its divisors is an integer number (25615562017).

Almost surely, 2^51231124033 is an apocalyptic number.

It is an amenable number.

51231124033 is a deficient number, since it is larger than the sum of its proper divisors (1).

51231124033 is an equidigital number, since it uses as much as digits as its factorization.

51231124033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 51231124033 its reverse (33042113215), we get a palindrome (84273237248).

The spelling of 51231124033 in words is "fifty-one billion, two hundred thirty-one million, one hundred twenty-four thousand, thirty-three".