51335512253 has 2 divisors, whose sum is σ = 51335512254. Its totient is φ = 51335512252.

The previous prime is 51335512247. The next prime is 51335512303. The reversal of 51335512253 is 35221553315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31494536089 + 19840976164 = 177467^2 + 140858^2 .

It is a cyclic number.

It is not a de Polignac number, because 51335512253 - 2³⁴ = 34155643069 is a prime.

It is a Sophie Germain 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 (51335512223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25667756126 + 25667756127.

It is an arithmetic number, because the mean of its divisors is an integer number (25667756127).

Almost surely, 2^51335512253 is an apocalyptic number.

It is an amenable number.

51335512253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51335512253 is an equidigital number, since it uses as much as digits as its factorization.

51335512253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67500, while the sum is 35.

The spelling of 51335512253 in words is "fifty-one billion, three hundred thirty-five million, five hundred twelve thousand, two hundred fifty-three".