51786793 has 2 divisors, whose sum is σ = 51786794. Its totient is φ = 51786792.

The previous prime is 51786781. The next prime is 51786817. The reversal of 51786793 is 39768715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47155689 + 4631104 = 6867^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 51786793 - 2²¹ = 49689641 is a prime.

It is not a weakly prime, because it can be changed into another prime (51786703) 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 as a sum of consecutive naturals, namely, 25893396 + 25893397.

It is an arithmetic number, because the mean of its divisors is an integer number (25893397).

Almost surely, 2^51786793 is an apocalyptic number.

It is an amenable number.

51786793 is a deficient number, since it is larger than the sum of its proper divisors (1).

51786793 is an equidigital number, since it uses as much as digits as its factorization.

51786793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 51786793 is about 7196.3041208665. The cubic root of 51786793 is about 372.7402902868.

The spelling of 51786793 in words is "fifty-one million, seven hundred eighty-six thousand, seven hundred ninety-three".