51705137 has 8 divisors (see below), whose sum is σ = 59374560. Its totient is φ = 44530560.

The previous prime is 51705119. The next prime is 51705139. The reversal of 51705137 is 73150715.

51705137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51705137 - 2¹⁴ = 51688753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51705139) 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 in 7 ways as a sum of consecutive naturals, for example, 123488 + ... + 123905.

It is an arithmetic number, because the mean of its divisors is an integer number (7421820).

Almost surely, 2^51705137 is an apocalyptic number.

It is an amenable number.

51705137 is a deficient number, since it is larger than the sum of its proper divisors (7669423).

51705137 is a wasteful number, since it uses less digits than its factorization.

51705137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247423.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 51705137 is about 7190.6284148188. The cubic root of 51705137 is about 372.5442783273.

The spelling of 51705137 in words is "fifty-one million, seven hundred five thousand, one hundred thirty-seven".