51155032273 has 2 divisors, whose sum is σ = 51155032274. Its totient is φ = 51155032272.

The previous prime is 51155032249. The next prime is 51155032289. The reversal of 51155032273 is 37223055115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29229715089 + 21925317184 = 170967^2 + 148072^2 .

It is a cyclic number.

It is not a de Polignac number, because 51155032273 - 2⁹ = 51155031761 is a prime.

It is not a weakly prime, because it can be changed into another prime (51155035273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25577516136 + 25577516137.

It is an arithmetic number, because the mean of its divisors is an integer number (25577516137).

Almost surely, 2^51155032273 is an apocalyptic number.

It is an amenable number.

51155032273 is a deficient number, since it is larger than the sum of its proper divisors (1).

51155032273 is an equidigital number, since it uses as much as digits as its factorization.

51155032273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 34.

Adding to 51155032273 its reverse (37223055115), we get a palindrome (88378087388).

The spelling of 51155032273 in words is "fifty-one billion, one hundred fifty-five million, thirty-two thousand, two hundred seventy-three".