51317711 has 2 divisors, whose sum is σ = 51317712. Its totient is φ = 51317710.

The previous prime is 51317701. The next prime is 51317729. The reversal of 51317711 is 11771315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51317711 - 2²² = 47123407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51317701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25658855 + 25658856.

It is an arithmetic number, because the mean of its divisors is an integer number (25658856).

Almost surely, 2^51317711 is an apocalyptic number.

51317711 is a deficient number, since it is larger than the sum of its proper divisors (1).

51317711 is an equidigital number, since it uses as much as digits as its factorization.

51317711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 735, while the sum is 26.

The square root of 51317711 is about 7163.6381120210. The cubic root of 51317711 is about 371.6114545488.

The spelling of 51317711 in words is "fifty-one million, three hundred seventeen thousand, seven hundred eleven".