51040030897 has 2 divisors, whose sum is σ = 51040030898. Its totient is φ = 51040030896.

The previous prime is 51040030883. The next prime is 51040030927. The reversal of 51040030897 is 79803004015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43613727921 + 7426302976 = 208839^2 + 86176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51040030897 is a prime.

It is not a weakly prime, because it can be changed into another prime (51040030997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25520015448 + 25520015449.

It is an arithmetic number, because the mean of its divisors is an integer number (25520015449).

Almost surely, 2^51040030897 is an apocalyptic number.

It is an amenable number.

51040030897 is a deficient number, since it is larger than the sum of its proper divisors (1).

51040030897 is an equidigital number, since it uses as much as digits as its factorization.

51040030897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 51040030897 in words is "fifty-one billion, forty million, thirty thousand, eight hundred ninety-seven".