51005711 has 2 divisors, whose sum is σ = 51005712. Its totient is φ = 51005710.

The previous prime is 51005701. The next prime is 51005737. The reversal of 51005711 is 11750015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51005711 - 2¹⁰ = 51004687 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51005701) 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, 25502855 + 25502856.

It is an arithmetic number, because the mean of its divisors is an integer number (25502856).

Almost surely, 2^51005711 is an apocalyptic number.

51005711 is a deficient number, since it is larger than the sum of its proper divisors (1).

51005711 is an equidigital number, since it uses as much as digits as its factorization.

51005711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 175, while the sum is 20.

The square root of 51005711 is about 7141.8282673276. The cubic root of 51005711 is about 370.8568187906.

Adding to 51005711 its reverse (11750015), we get a palindrome (62755726).

The spelling of 51005711 in words is "fifty-one million, five thousand, seven hundred eleven".