51731273053 has 2 divisors, whose sum is σ = 51731273054. Its totient is φ = 51731273052.

The previous prime is 51731272991. The next prime is 51731273057. The reversal of 51731273053 is 35037213715.

51731273053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51728043844 + 3229209 = 227438^2 + 1797^2 .

It is a cyclic number.

It is not a de Polignac number, because 51731273053 - 2¹³ = 51731264861 is a prime.

It is a super-2 number, since 2×51731273053² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51731273057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25865636526 + 25865636527.

It is an arithmetic number, because the mean of its divisors is an integer number (25865636527).

Almost surely, 2^51731273053 is an apocalyptic number.

It is an amenable number.

51731273053 is a deficient number, since it is larger than the sum of its proper divisors (1).

51731273053 is an equidigital number, since it uses as much as digits as its factorization.

51731273053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150, while the sum is 37.

Adding to 51731273053 its reverse (35037213715), we get a palindrome (86768486768).

The spelling of 51731273053 in words is "fifty-one billion, seven hundred thirty-one million, two hundred seventy-three thousand, fifty-three".