43120052257 has 2 divisors, whose sum is σ = 43120052258. Its totient is φ = 43120052256.

The previous prime is 43120052243. The next prime is 43120052281. The reversal of 43120052257 is 75225002134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41993845776 + 1126206481 = 204924^2 + 33559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43120052257 is a prime.

It is not a weakly prime, because it can be changed into another prime (43120052057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21560026128 + 21560026129.

It is an arithmetic number, because the mean of its divisors is an integer number (21560026129).

Almost surely, 2^43120052257 is an apocalyptic number.

It is an amenable number.

43120052257 is a deficient number, since it is larger than the sum of its proper divisors (1).

43120052257 is an equidigital number, since it uses as much as digits as its factorization.

43120052257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 31.

The spelling of 43120052257 in words is "forty-three billion, one hundred twenty million, fifty-two thousand, two hundred fifty-seven".