51475811 has 2 divisors, whose sum is σ = 51475812. Its totient is φ = 51475810.

The previous prime is 51475799. The next prime is 51475819. The reversal of 51475811 is 11857415.

51475811 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 51475811 - 2¹⁸ = 51213667 is a prime.

It is not a weakly prime, because it can be changed into another prime (51475819) 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, 25737905 + 25737906.

It is an arithmetic number, because the mean of its divisors is an integer number (25737906).

Almost surely, 2^51475811 is an apocalyptic number.

51475811 is a deficient number, since it is larger than the sum of its proper divisors (1).

51475811 is an equidigital number, since it uses as much as digits as its factorization.

51475811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 32.

The square root of 51475811 is about 7174.6645217738. The cubic root of 51475811 is about 371.9926844632.

The spelling of 51475811 in words is "fifty-one million, four hundred seventy-five thousand, eight hundred eleven".