243244525481 has 2 divisors, whose sum is σ = 243244525482. Its totient is φ = 243244525480.

The previous prime is 243244525457. The next prime is 243244525547. The reversal of 243244525481 is 184525442342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236332099600 + 6912425881 = 486140^2 + 83141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243244525481 is a prime.

It is a super-2 number, since 2×243244525481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243244525411) 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, 121622262740 + 121622262741.

It is an arithmetic number, because the mean of its divisors is an integer number (121622262741).

Almost surely, 2^243244525481 is an apocalyptic number.

It is an amenable number.

243244525481 is a deficient number, since it is larger than the sum of its proper divisors (1).

243244525481 is an equidigital number, since it uses as much as digits as its factorization.

243244525481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1228800, while the sum is 44.

The spelling of 243244525481 in words is "two hundred forty-three billion, two hundred forty-four million, five hundred twenty-five thousand, four hundred eighty-one".