51210331465541 has 2 divisors, whose sum is σ = 51210331465542. Its totient is φ = 51210331465540.

The previous prime is 51210331465483. The next prime is 51210331465549. The reversal of 51210331465541 is 14556413301215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33022204785025 + 18188126680516 = 5746495^2 + 4264754^2 .

It is a cyclic number.

It is not a de Polignac number, because 51210331465541 - 2¹⁴ = 51210331449157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51210331465549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25605165732770 + 25605165732771.

It is an arithmetic number, because the mean of its divisors is an integer number (25605165732771).

Almost surely, 2^{51210331465541} is an apocalyptic number.

It is an amenable number.

51210331465541 is a deficient number, since it is larger than the sum of its proper divisors (1).

51210331465541 is an equidigital number, since it uses as much as digits as its factorization.

51210331465541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 51210331465541 its reverse (14556413301215), we get a palindrome (65766744766756).

The spelling of 51210331465541 in words is "fifty-one trillion, two hundred ten billion, three hundred thirty-one million, four hundred sixty-five thousand, five hundred forty-one".