43552655257 has 2 divisors, whose sum is σ = 43552655258. Its totient is φ = 43552655256.

The previous prime is 43552655231. The next prime is 43552655291. The reversal of 43552655257 is 75255625534.

43552655257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43023471241 + 529184016 = 207421^2 + 23004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43552655257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43552655257.

It is not a weakly prime, because it can be changed into another prime (43552655297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21776327628 + 21776327629.

It is an arithmetic number, because the mean of its divisors is an integer number (21776327629).

Almost surely, 2^43552655257 is an apocalyptic number.

It is an amenable number.

43552655257 is a deficient number, since it is larger than the sum of its proper divisors (1).

43552655257 is an equidigital number, since it uses as much as digits as its factorization.

43552655257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300000, while the sum is 49.

The spelling of 43552655257 in words is "forty-three billion, five hundred fifty-two million, six hundred fifty-five thousand, two hundred fifty-seven".