51512255297 has 2 divisors, whose sum is σ = 51512255298. Its totient is φ = 51512255296.

The previous prime is 51512255269. The next prime is 51512255369. The reversal of 51512255297 is 79255221515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49515595441 + 1996659856 = 222521^2 + 44684^2 .

It is a cyclic number.

It is not a de Polignac number, because 51512255297 - 2¹⁰ = 51512254273 is a prime.

It is not a weakly prime, because it can be changed into another prime (51512255797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25756127648 + 25756127649.

It is an arithmetic number, because the mean of its divisors is an integer number (25756127649).

Almost surely, 2^51512255297 is an apocalyptic number.

It is an amenable number.

51512255297 is a deficient number, since it is larger than the sum of its proper divisors (1).

51512255297 is an equidigital number, since it uses as much as digits as its factorization.

51512255297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 315000, while the sum is 44.

The spelling of 51512255297 in words is "fifty-one billion, five hundred twelve million, two hundred fifty-five thousand, two hundred ninety-seven".