51231144041251 has 2 divisors, whose sum is σ = 51231144041252. Its totient is φ = 51231144041250.

The previous prime is 51231144041237. The next prime is 51231144041263. The reversal of 51231144041251 is 15214044113215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51231144041251 - 2²⁷ = 51231009823523 is a prime.

It is not a weakly prime, because it can be changed into another prime (51231144042251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25615572020625 + 25615572020626.

It is an arithmetic number, because the mean of its divisors is an integer number (25615572020626).

Almost surely, 2^{51231144041251} is an apocalyptic number.

51231144041251 is a deficient number, since it is larger than the sum of its proper divisors (1).

51231144041251 is an equidigital number, since it uses as much as digits as its factorization.

51231144041251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 51231144041251 its reverse (15214044113215), we get a palindrome (66445188154466).

The spelling of 51231144041251 in words is "fifty-one trillion, two hundred thirty-one billion, one hundred forty-four million, forty-one thousand, two hundred fifty-one".