51812771 has 2 divisors, whose sum is σ = 51812772. Its totient is φ = 51812770.

The previous prime is 51812759. The next prime is 51812777. The reversal of 51812771 is 17721815.

51812771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51812771 - 2¹⁴ = 51796387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51812777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25906385 + 25906386.

It is an arithmetic number, because the mean of its divisors is an integer number (25906386).

Almost surely, 2^51812771 is an apocalyptic number.

51812771 is a deficient number, since it is larger than the sum of its proper divisors (1).

51812771 is an equidigital number, since it uses as much as digits as its factorization.

51812771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 32.

The square root of 51812771 is about 7198.1088488575. The cubic root of 51812771 is about 372.8026062303.

The spelling of 51812771 in words is "fifty-one million, eight hundred twelve thousand, seven hundred seventy-one".