51476129 has 2 divisors, whose sum is σ = 51476130. Its totient is φ = 51476128.

The previous prime is 51476123. The next prime is 51476137. The reversal of 51476129 is 92167415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51051025 + 425104 = 7145^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 51476129 - 2⁸ = 51475873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51476123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25738064 + 25738065.

It is an arithmetic number, because the mean of its divisors is an integer number (25738065).

Almost surely, 2^51476129 is an apocalyptic number.

It is an amenable number.

51476129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51476129 is an equidigital number, since it uses as much as digits as its factorization.

51476129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 51476129 is about 7174.6866830545. The cubic root of 51476129 is about 371.9934504763.

The spelling of 51476129 in words is "fifty-one million, four hundred seventy-six thousand, one hundred twenty-nine".