51808588253 has 2 divisors, whose sum is σ = 51808588254. Its totient is φ = 51808588252.

The previous prime is 51808588217. The next prime is 51808588319. The reversal of 51808588253 is 35288580815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46020117529 + 5788470724 = 214523^2 + 76082^2 .

It is a cyclic number.

It is not a de Polignac number, because 51808588253 - 2⁸ = 51808587997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51808588195 and 51808588204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51808588213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25904294126 + 25904294127.

It is an arithmetic number, because the mean of its divisors is an integer number (25904294127).

Almost surely, 2^51808588253 is an apocalyptic number.

It is an amenable number.

51808588253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51808588253 is an equidigital number, since it uses as much as digits as its factorization.

51808588253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072000, while the sum is 53.

The spelling of 51808588253 in words is "fifty-one billion, eight hundred eight million, five hundred eighty-eight thousand, two hundred fifty-three".