51712429 has 2 divisors, whose sum is σ = 51712430. Its totient is φ = 51712428.

The previous prime is 51712411. The next prime is 51712459. The reversal of 51712429 is 92421715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37234404 + 14478025 = 6102^2 + 3805^2 .

It is a cyclic number.

It is not a de Polignac number, because 51712429 - 2⁹ = 51711917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51712429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51712459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25856214 + 25856215.

It is an arithmetic number, because the mean of its divisors is an integer number (25856215).

Almost surely, 2^51712429 is an apocalyptic number.

It is an amenable number.

51712429 is a deficient number, since it is larger than the sum of its proper divisors (1).

51712429 is an equidigital number, since it uses as much as digits as its factorization.

51712429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 51712429 is about 7191.1354458110. The cubic root of 51712429 is about 372.5617908695.

The spelling of 51712429 in words is "fifty-one million, seven hundred twelve thousand, four hundred twenty-nine".