51245052511 has 2 divisors, whose sum is σ = 51245052512. Its totient is φ = 51245052510.

The previous prime is 51245052487. The next prime is 51245052527. The reversal of 51245052511 is 11525054215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51245052511 - 2⁹ = 51245051999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51245052211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25622526255 + 25622526256.

It is an arithmetic number, because the mean of its divisors is an integer number (25622526256).

Almost surely, 2^51245052511 is an apocalyptic number.

51245052511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51245052511 is an equidigital number, since it uses as much as digits as its factorization.

51245052511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 51245052511 in words is "fifty-one billion, two hundred forty-five million, fifty-two thousand, five hundred eleven".