51310099 has 2 divisors, whose sum is σ = 51310100. Its totient is φ = 51310098.

The previous prime is 51310093. The next prime is 51310109. The reversal of 51310099 is 99001315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51310099 - 2⁷ = 51309971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51310093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25655049 + 25655050.

It is an arithmetic number, because the mean of its divisors is an integer number (25655050).

Almost surely, 2^51310099 is an apocalyptic number.

51310099 is a deficient number, since it is larger than the sum of its proper divisors (1).

51310099 is an equidigital number, since it uses as much as digits as its factorization.

51310099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 51310099 is about 7163.1067980311. The cubic root of 51310099 is about 371.5930798252.

The spelling of 51310099 in words is "fifty-one million, three hundred ten thousand, ninety-nine".