51580811 has 2 divisors, whose sum is σ = 51580812. Its totient is φ = 51580810.

The previous prime is 51580799. The next prime is 51580813. The reversal of 51580811 is 11808515.

51580811 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 51580811 - 2¹⁴ = 51564427 is a prime.

It is a Sophie Germain prime.

Together with 51580813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51580813) 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, 25790405 + 25790406.

It is an arithmetic number, because the mean of its divisors is an integer number (25790406).

Almost surely, 2^51580811 is an apocalyptic number.

51580811 is a deficient number, since it is larger than the sum of its proper divisors (1).

51580811 is an equidigital number, since it uses as much as digits as its factorization.

51580811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 51580811 is about 7181.9782093794. The cubic root of 51580811 is about 372.2454420438.

The spelling of 51580811 in words is "fifty-one million, five hundred eighty thousand, eight hundred eleven".