51778093 has 2 divisors, whose sum is σ = 51778094. Its totient is φ = 51778092.

The previous prime is 51778061. The next prime is 51778109. The reversal of 51778093 is 39087715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48399849 + 3378244 = 6957^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 51778093 - 2⁵ = 51778061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51778003) 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, 25889046 + 25889047.

It is an arithmetic number, because the mean of its divisors is an integer number (25889047).

Almost surely, 2^51778093 is an apocalyptic number.

It is an amenable number.

51778093 is a deficient number, since it is larger than the sum of its proper divisors (1).

51778093 is an equidigital number, since it uses as much as digits as its factorization.

51778093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 51778093 is about 7195.6996185222. The cubic root of 51778093 is about 372.7194160964.

The spelling of 51778093 in words is "fifty-one million, seven hundred seventy-eight thousand, ninety-three".