51415129 has 2 divisors, whose sum is σ = 51415130. Its totient is φ = 51415128.

The previous prime is 51415093. The next prime is 51415139. The reversal of 51415129 is 92151415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32752729 + 18662400 = 5723^2 + 4320^2 .

It is a cyclic number.

It is not a de Polignac number, because 51415129 - 2¹⁵ = 51382361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51415097 and 51415106.

It is not a weakly prime, because it can be changed into another prime (51415139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25707564 + 25707565.

It is an arithmetic number, because the mean of its divisors is an integer number (25707565).

Almost surely, 2^51415129 is an apocalyptic number.

It is an amenable number.

51415129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51415129 is an equidigital number, since it uses as much as digits as its factorization.

51415129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 28.

The square root of 51415129 is about 7170.4343662013. The cubic root of 51415129 is about 371.8464530872.

The spelling of 51415129 in words is "fifty-one million, four hundred fifteen thousand, one hundred twenty-nine".