51030193 has 2 divisors, whose sum is σ = 51030194. Its totient is φ = 51030192.

The previous prime is 51030191. The next prime is 51030211. The reversal of 51030193 is 39103015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51022449 + 7744 = 7143^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 51030193 - 2¹ = 51030191 is a prime.

Together with 51030191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51030191) 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, 25515096 + 25515097.

It is an arithmetic number, because the mean of its divisors is an integer number (25515097).

Almost surely, 2^51030193 is an apocalyptic number.

It is an amenable number.

51030193 is a deficient number, since it is larger than the sum of its proper divisors (1).

51030193 is an equidigital number, since it uses as much as digits as its factorization.

51030193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 51030193 is about 7143.5420485919. The cubic root of 51030193 is about 370.9161445942.

It can be divided in two parts, 510 and 30193, that added together give a palindrome (30703).

The spelling of 51030193 in words is "fifty-one million, thirty thousand, one hundred ninety-three".