52181537773 has 2 divisors, whose sum is σ = 52181537774. Its totient is φ = 52181537772.

The previous prime is 52181537743. The next prime is 52181537777. The reversal of 52181537773 is 37773518125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42148911204 + 10032626569 = 205302^2 + 100163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52181537773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52181537777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26090768886 + 26090768887.

It is an arithmetic number, because the mean of its divisors is an integer number (26090768887).

Almost surely, 2^52181537773 is an apocalyptic number.

It is an amenable number.

52181537773 is a deficient number, since it is larger than the sum of its proper divisors (1).

52181537773 is an equidigital number, since it uses as much as digits as its factorization.

52181537773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1234800, while the sum is 49.

The spelling of 52181537773 in words is "fifty-two billion, one hundred eighty-one million, five hundred thirty-seven thousand, seven hundred seventy-three".