51747174121 has 2 divisors, whose sum is σ = 51747174122. Its totient is φ = 51747174120.

The previous prime is 51747174109. The next prime is 51747174133. The reversal of 51747174121 is 12147174715.

It is a balanced prime because it is at equal distance from previous prime (51747174109) and next prime (51747174133).

It can be written as a sum of positive squares in only one way, i.e., 51672109225 + 75064896 = 227315^2 + 8664^2 .

It is a cyclic number.

It is not a de Polignac number, because 51747174121 - 2¹¹ = 51747172073 is a prime.

It is not a weakly prime, because it can be changed into another prime (51747174221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25873587060 + 25873587061.

It is an arithmetic number, because the mean of its divisors is an integer number (25873587061).

Almost surely, 2^51747174121 is an apocalyptic number.

It is an amenable number.

51747174121 is a deficient number, since it is larger than the sum of its proper divisors (1).

51747174121 is an equidigital number, since it uses as much as digits as its factorization.

51747174121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54880, while the sum is 40.

The spelling of 51747174121 in words is "fifty-one billion, seven hundred forty-seven million, one hundred seventy-four thousand, one hundred twenty-one".