51504052273 has 2 divisors, whose sum is σ = 51504052274. Its totient is φ = 51504052272.

The previous prime is 51504052241. The next prime is 51504052307. The reversal of 51504052273 is 37225040515.

It is an a-pointer prime, because the next prime (51504052307) can be obtained adding 51504052273 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36636639649 + 14867412624 = 191407^2 + 121932^2 .

It is a cyclic number.

It is not a de Polignac number, because 51504052273 - 2⁵ = 51504052241 is a prime.

It is not a weakly prime, because it can be changed into another prime (51508052273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752026136 + 25752026137.

It is an arithmetic number, because the mean of its divisors is an integer number (25752026137).

Almost surely, 2^51504052273 is an apocalyptic number.

It is an amenable number.

51504052273 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504052273 is an equidigital number, since it uses as much as digits as its factorization.

51504052273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 34.

Adding to 51504052273 its reverse (37225040515), we get a palindrome (88729092788).

The spelling of 51504052273 in words is "fifty-one billion, five hundred four million, fifty-two thousand, two hundred seventy-three".