51806363 has 16 divisors (see below), whose sum is σ = 61501440. Its totient is φ = 42703200.

The previous prime is 51806353. The next prime is 51806399. The reversal of 51806363 is 36360815.

It is a cyclic number.

It is not a de Polignac number, because 51806363 - 2⁴ = 51806347 is a prime.

51806363 is a modest number, since divided by 6363 gives 5180 as remainder.

It is not an unprimeable number, because it can be changed into a prime (51806303) 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, 38618 + ... + 39936.

It is an arithmetic number, because the mean of its divisors is an integer number (3843840).

Almost surely, 2^51806363 is an apocalyptic number.

51806363 is a deficient number, since it is larger than the sum of its proper divisors (9695077).

51806363 is a wasteful number, since it uses less digits than its factorization.

51806363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 51806363 is about 7197.6637181797. The cubic root of 51806363 is about 372.7872366760.

The spelling of 51806363 in words is "fifty-one million, eight hundred six thousand, three hundred sixty-three".