51995199701 has 2 divisors, whose sum is σ = 51995199702. Its totient is φ = 51995199700.

The previous prime is 51995199671. The next prime is 51995199761. The reversal of 51995199701 is 10799159915.

51995199701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41860750801 + 10134448900 = 204599^2 + 100670^2 .

It is a cyclic number.

It is not a de Polignac number, because 51995199701 - 2⁶ = 51995199637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51995199761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25997599850 + 25997599851.

It is an arithmetic number, because the mean of its divisors is an integer number (25997599851).

Almost surely, 2^51995199701 is an apocalyptic number.

It is an amenable number.

51995199701 is a deficient number, since it is larger than the sum of its proper divisors (1).

51995199701 is an equidigital number, since it uses as much as digits as its factorization.

51995199701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1148175, while the sum is 56.

The spelling of 51995199701 in words is "fifty-one billion, nine hundred ninety-five million, one hundred ninety-nine thousand, seven hundred one".