51072193 has 2 divisors, whose sum is σ = 51072194. Its totient is φ = 51072192.

The previous prime is 51072181. The next prime is 51072211. The reversal of 51072193 is 39127015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50936769 + 135424 = 7137^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 51072193 - 2²¹ = 48975041 is a prime.

It is not a weakly prime, because it can be changed into another prime (51072113) 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, 25536096 + 25536097.

It is an arithmetic number, because the mean of its divisors is an integer number (25536097).

Almost surely, 2^51072193 is an apocalyptic number.

It is an amenable number.

51072193 is a deficient number, since it is larger than the sum of its proper divisors (1).

51072193 is an equidigital number, since it uses as much as digits as its factorization.

51072193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 51072193 is about 7146.4811620825. The cubic root of 51072193 is about 371.0178765637.

The spelling of 51072193 in words is "fifty-one million, seventy-two thousand, one hundred ninety-three".