51534501102121 has 2 divisors, whose sum is σ = 51534501102122. Its totient is φ = 51534501102120.

The previous prime is 51534501102109. The next prime is 51534501102143. The reversal of 51534501102121 is 12120110543515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33257550828096 + 18276950274025 = 5766936^2 + 4275155^2 .

It is a cyclic number.

It is not a de Polignac number, because 51534501102121 - 2⁹ = 51534501101609 is a prime.

It is not a weakly prime, because it can be changed into another prime (51534501192121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25767250551060 + 25767250551061.

It is an arithmetic number, because the mean of its divisors is an integer number (25767250551061).

Almost surely, 2^{51534501102121} is an apocalyptic number.

It is an amenable number.

51534501102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

51534501102121 is an equidigital number, since it uses as much as digits as its factorization.

51534501102121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 51534501102121 its reverse (12120110543515), we get a palindrome (63654611645636).

The spelling of 51534501102121 in words is "fifty-one trillion, five hundred thirty-four billion, five hundred one million, one hundred two thousand, one hundred twenty-one".