51010709 has 2 divisors, whose sum is σ = 51010710. Its totient is φ = 51010708.

The previous prime is 51010699. The next prime is 51010723. The reversal of 51010709 is 90701015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37246609 + 13764100 = 6103^2 + 3710^2 .

It is a cyclic number.

It is not a de Polignac number, because 51010709 - 2¹⁶ = 50945173 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51010789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505354 + 25505355.

It is an arithmetic number, because the mean of its divisors is an integer number (25505355).

Almost surely, 2^51010709 is an apocalyptic number.

It is an amenable number.

51010709 is a deficient number, since it is larger than the sum of its proper divisors (1).

51010709 is an equidigital number, since it uses as much as digits as its factorization.

51010709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 23.

The square root of 51010709 is about 7142.1781691582. The cubic root of 51010709 is about 370.8689316946.

The spelling of 51010709 in words is "fifty-one million, ten thousand, seven hundred nine".