51140429 has 2 divisors, whose sum is σ = 51140430. Its totient is φ = 51140428.

The previous prime is 51140423. The next prime is 51140447. The reversal of 51140429 is 92404115.

51140429 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., 31382404 + 19758025 = 5602^2 + 4445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51140429 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51140398 and 51140407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51140423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25570214 + 25570215.

It is an arithmetic number, because the mean of its divisors is an integer number (25570215).

Almost surely, 2^51140429 is an apocalyptic number.

It is an amenable number.

51140429 is a deficient number, since it is larger than the sum of its proper divisors (1).

51140429 is an equidigital number, since it uses as much as digits as its factorization.

51140429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 51140429 is about 7151.2536663161. The cubic root of 51140429 is about 371.1830382542.

The spelling of 51140429 in words is "fifty-one million, one hundred forty thousand, four hundred twenty-nine".