51051102101 has 2 divisors, whose sum is σ = 51051102102. Its totient is φ = 51051102100.

The previous prime is 51051102083. The next prime is 51051102139. The reversal of 51051102101 is 10120115015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46042001476 + 5009100625 = 214574^2 + 70775^2 .

It is a cyclic number.

It is not a de Polignac number, because 51051102101 - 2¹⁰ = 51051101077 is a prime.

It is a super-2 number, since 2×51051102101² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51051102101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51051105101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525551050 + 25525551051.

It is an arithmetic number, because the mean of its divisors is an integer number (25525551051).

Almost surely, 2^51051102101 is an apocalyptic number.

It is an amenable number.

51051102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

51051102101 is an equidigital number, since it uses as much as digits as its factorization.

51051102101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50, while the sum is 17.

Adding to 51051102101 its reverse (10120115015), we get a palindrome (61171217116).

The spelling of 51051102101 in words is "fifty-one billion, fifty-one million, one hundred two thousand, one hundred one".