52542145517 has 2 divisors, whose sum is σ = 52542145518. Its totient is φ = 52542145516.

The previous prime is 52542145511. The next prime is 52542145541. The reversal of 52542145517 is 71554124525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28214256841 + 24327888676 = 167971^2 + 155974^2 .

It is a cyclic number.

It is not a de Polignac number, because 52542145517 - 2⁸ = 52542145261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52542145511) 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, 26271072758 + 26271072759.

It is an arithmetic number, because the mean of its divisors is an integer number (26271072759).

Almost surely, 2^52542145517 is an apocalyptic number.

It is an amenable number.

52542145517 is a deficient number, since it is larger than the sum of its proper divisors (1).

52542145517 is an equidigital number, since it uses as much as digits as its factorization.

52542145517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 280000, while the sum is 41.

The spelling of 52542145517 in words is "fifty-two billion, five hundred forty-two million, one hundred forty-five thousand, five hundred seventeen".