51107129 has 2 divisors, whose sum is σ = 51107130. Its totient is φ = 51107128.

The previous prime is 51107123. The next prime is 51107143. The reversal of 51107129 is 92170115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 13225 = 7148^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 51107129 - 2⁴ = 51107113 is a prime.

It is a super-2 number, since 2×51107129² = 5223877269245282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51107098 and 51107107.

It is not a weakly prime, because it can be changed into another prime (51107123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25553564 + 25553565.

It is an arithmetic number, because the mean of its divisors is an integer number (25553565).

Almost surely, 2^51107129 is an apocalyptic number.

It is an amenable number.

51107129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51107129 is an equidigital number, since it uses as much as digits as its factorization.

51107129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 51107129 is about 7148.9250240858. The cubic root of 51107129 is about 371.1024557014.

The spelling of 51107129 in words is "fifty-one million, one hundred seven thousand, one hundred twenty-nine".