51713905 has 8 divisors (see below), whose sum is σ = 62289000. Its totient is φ = 41216256.

The previous prime is 51713903. The next prime is 51713911. The reversal of 51713905 is 50931715.

51713905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4145296 + 47568609 = 2036^2 + 6897^2 .

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 51713905 - 2¹ = 51713903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51713903) 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, 17880 + ... + 20569.

It is an arithmetic number, because the mean of its divisors is an integer number (7786125).

Almost surely, 2^51713905 is an apocalyptic number.

It is an amenable number.

51713905 is a deficient number, since it is larger than the sum of its proper divisors (10575095).

51713905 is a wasteful number, since it uses less digits than its factorization.

51713905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38723.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 51713905 is about 7191.2380714311. The cubic root of 51713905 is about 372.5653354460.

The spelling of 51713905 in words is "fifty-one million, seven hundred thirteen thousand, nine hundred five".