51650563 has 2 divisors, whose sum is σ = 51650564. Its totient is φ = 51650562.

The previous prime is 51650561. The next prime is 51650579. The reversal of 51650563 is 36505615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51650563 - 2¹ = 51650561 is a prime.

Together with 51650561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51650561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25825281 + 25825282.

It is an arithmetic number, because the mean of its divisors is an integer number (25825282).

Almost surely, 2^51650563 is an apocalyptic number.

51650563 is a deficient number, since it is larger than the sum of its proper divisors (1).

51650563 is an equidigital number, since it uses as much as digits as its factorization.

51650563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 51650563 is about 7186.8326124935. The cubic root of 51650563 is about 372.4131605447.

The spelling of 51650563 in words is "fifty-one million, six hundred fifty thousand, five hundred sixty-three".