51805093 has 2 divisors, whose sum is σ = 51805094. Its totient is φ = 51805092.

The previous prime is 51805051. The next prime is 51805097. The reversal of 51805093 is 39050815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44930209 + 6874884 = 6703^2 + 2622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51805093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51805097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25902546 + 25902547.

It is an arithmetic number, because the mean of its divisors is an integer number (25902547).

Almost surely, 2^51805093 is an apocalyptic number.

It is an amenable number.

51805093 is a deficient number, since it is larger than the sum of its proper divisors (1).

51805093 is an equidigital number, since it uses as much as digits as its factorization.

51805093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 51805093 is about 7197.5754945676. The cubic root of 51805093 is about 372.7841904372.

The spelling of 51805093 in words is "fifty-one million, eight hundred five thousand, ninety-three".