45161161 has 2 divisors, whose sum is σ = 45161162. Its totient is φ = 45161160.

The previous prime is 45161159. The next prime is 45161177. The reversal of 45161161 is 16116154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26842761 + 18318400 = 5181^2 + 4280^2 .

It is a cyclic number.

It is not a de Polignac number, because 45161161 - 2¹ = 45161159 is a prime.

Together with 45161159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45161111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22580580 + 22580581.

It is an arithmetic number, because the mean of its divisors is an integer number (22580581).

Almost surely, 2^45161161 is an apocalyptic number.

It is an amenable number.

45161161 is a deficient number, since it is larger than the sum of its proper divisors (1).

45161161 is an equidigital number, since it uses as much as digits as its factorization.

45161161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 25.

The square root of 45161161 is about 6720.2054284077. The cubic root of 45161161 is about 356.1134412073.

The spelling of 45161161 in words is "forty-five million, one hundred sixty-one thousand, one hundred sixty-one".