755645161 has 2 divisors, whose sum is σ = 755645162. Its totient is φ = 755645160.

The previous prime is 755645159. The next prime is 755645167. The reversal of 755645161 is 161546557.

755645161 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., 523265625 + 232379536 = 22875^2 + 15244^2 .

It is an emirp because it is prime and its reverse (161546557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 755645161 - 2¹ = 755645159 is a prime.

Together with 755645159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (755645167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377822580 + 377822581.

It is an arithmetic number, because the mean of its divisors is an integer number (377822581).

Almost surely, 2^755645161 is an apocalyptic number.

It is an amenable number.

755645161 is a deficient number, since it is larger than the sum of its proper divisors (1).

755645161 is an equidigital number, since it uses as much as digits as its factorization.

755645161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 40.

The square root of 755645161 is about 27489.0007275637. Note that the first 3 decimals coincide. The cubic root of 755645161 is about 910.8341427772.

Subtracting from 755645161 its sum of digits (40), we obtain a square (755645121 = 27489²).

The spelling of 755645161 in words is "seven hundred fifty-five million, six hundred forty-five thousand, one hundred sixty-one".