51636163 has 8 divisors (see below), whose sum is σ = 53628608. Its totient is φ = 49679784.

The previous prime is 51636161. The next prime is 51636199. The reversal of 51636163 is 36163615.

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 51636163 - 2¹ = 51636161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51636161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6081 + ... + 11842.

It is an arithmetic number, because the mean of its divisors is an integer number (6703576).

Almost surely, 2^51636163 is an apocalyptic number.

51636163 is a deficient number, since it is larger than the sum of its proper divisors (1992445).

51636163 is a wasteful number, since it uses less digits than its factorization.

51636163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18033.

The product of its digits is 9720, while the sum is 31.

The square root of 51636163 is about 7185.8307105024. The cubic root of 51636163 is about 372.3785481568.

Adding to 51636163 its reverse (36163615), we get a palindrome (87799778).

The spelling of 51636163 in words is "fifty-one million, six hundred thirty-six thousand, one hundred sixty-three".