51636983 has 2 divisors, whose sum is σ = 51636984. Its totient is φ = 51636982.

The previous prime is 51636961. The next prime is 51636989. The reversal of 51636983 is 38963615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51636983 - 2⁶ = 51636919 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51636983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51636989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25818491 + 25818492.

It is an arithmetic number, because the mean of its divisors is an integer number (25818492).

Almost surely, 2^51636983 is an apocalyptic number.

51636983 is a deficient number, since it is larger than the sum of its proper divisors (1).

51636983 is an equidigital number, since it uses as much as digits as its factorization.

51636983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 51636983 is about 7185.8877670055. The cubic root of 51636983 is about 372.3805193128.

The spelling of 51636983 in words is "fifty-one million, six hundred thirty-six thousand, nine hundred eighty-three".