51508302653 has 2 divisors, whose sum is σ = 51508302654. Its totient is φ = 51508302652.

The previous prime is 51508302623. The next prime is 51508302733. The reversal of 51508302653 is 35620380515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47547110809 + 3961191844 = 218053^2 + 62938^2 .

It is a cyclic number.

It is not a de Polignac number, because 51508302653 - 2²⁰ = 51507254077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51508302623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25754151326 + 25754151327.

It is an arithmetic number, because the mean of its divisors is an integer number (25754151327).

Almost surely, 2^51508302653 is an apocalyptic number.

It is an amenable number.

51508302653 is a deficient number, since it is larger than the sum of its proper divisors (1).

51508302653 is an equidigital number, since it uses as much as digits as its factorization.

51508302653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 51508302653 in words is "fifty-one billion, five hundred eight million, three hundred two thousand, six hundred fifty-three".