51650713 has 4 divisors (see below), whose sum is σ = 52497508. Its totient is φ = 50803920.

The previous prime is 51650671. The next prime is 51650723. The reversal of 51650713 is 31705615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18045504 + 33605209 = 4248^2 + 5797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51650713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51650723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423306 + ... + 423427.

It is an arithmetic number, because the mean of its divisors is an integer number (13124377).

Almost surely, 2^51650713 is an apocalyptic number.

It is an amenable number.

51650713 is a deficient number, since it is larger than the sum of its proper divisors (846795).

51650713 is an equidigital number, since it uses as much as digits as its factorization.

51650713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846794.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 51650713 is about 7186.8430482375. The cubic root of 51650713 is about 372.4135210565.

The spelling of 51650713 in words is "fifty-one million, six hundred fifty thousand, seven hundred thirteen".