51646713 has 16 divisors (see below), whose sum is σ = 71540736. Its totient is φ = 33106320.

The previous prime is 51646657. The next prime is 51646717. The reversal of 51646713 is 31764615.

It is not a de Polignac number, because 51646713 - 2⁶ = 51646649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51646717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13456 + ... + 16862.

It is an arithmetic number, because the mean of its divisors is an integer number (4471296).

Almost surely, 2^51646713 is an apocalyptic number.

It is an amenable number.

51646713 is a deficient number, since it is larger than the sum of its proper divisors (19894023).

51646713 is a wasteful number, since it uses less digits than its factorization.

51646713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604.

The product of its digits is 15120, while the sum is 33.

The square root of 51646713 is about 7186.5647565440. The cubic root of 51646713 is about 372.4039071683.

The spelling of 51646713 in words is "fifty-one million, six hundred forty-six thousand, seven hundred thirteen".