51343253497 has 2 divisors, whose sum is σ = 51343253498. Its totient is φ = 51343253496.

The previous prime is 51343253483. The next prime is 51343253527. The reversal of 51343253497 is 79435234315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46509666921 + 4833586576 = 215661^2 + 69524^2 .

It is a cyclic number.

It is not a de Polignac number, because 51343253497 - 2¹⁹ = 51342729209 is a prime.

It is a super-2 number, since 2×51343253497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51343253197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25671626748 + 25671626749.

It is an arithmetic number, because the mean of its divisors is an integer number (25671626749).

Almost surely, 2^51343253497 is an apocalyptic number.

It is an amenable number.

51343253497 is a deficient number, since it is larger than the sum of its proper divisors (1).

51343253497 is an equidigital number, since it uses as much as digits as its factorization.

51343253497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 46.

The spelling of 51343253497 in words is "fifty-one billion, three hundred forty-three million, two hundred fifty-three thousand, four hundred ninety-seven".