51156302293 has 2 divisors, whose sum is σ = 51156302294. Its totient is φ = 51156302292.

The previous prime is 51156302291. The next prime is 51156302317. The reversal of 51156302293 is 39220365115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49213872964 + 1942429329 = 221842^2 + 44073^2 .

It is a cyclic number.

It is not a de Polignac number, because 51156302293 - 2¹ = 51156302291 is a prime.

Together with 51156302291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51156302291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25578151146 + 25578151147.

It is an arithmetic number, because the mean of its divisors is an integer number (25578151147).

Almost surely, 2^51156302293 is an apocalyptic number.

It is an amenable number.

51156302293 is a deficient number, since it is larger than the sum of its proper divisors (1).

51156302293 is an equidigital number, since it uses as much as digits as its factorization.

51156302293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 51156302293 in words is "fifty-one billion, one hundred fifty-six million, three hundred two thousand, two hundred ninety-three".