5645161 has 2 divisors, whose sum is σ = 5645162. Its totient is φ = 5645160.

The previous prime is 5645137. The next prime is 5645177. The reversal of 5645161 is 1615465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5433561 + 211600 = 2331^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645161 - 2¹⁵ = 5612393 is a prime.

5645161 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5645191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822580 + 2822581.

It is an arithmetic number, because the mean of its divisors is an integer number (2822581).

Almost surely, 2^5645161 is an apocalyptic number.

It is an amenable number.

5645161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645161 is an equidigital number, since it uses as much as digits as its factorization.

5645161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The square root of 5645161 is about 2375.9547554615. The cubic root of 5645161 is about 178.0568875110.

The spelling of 5645161 in words is "five million, six hundred forty-five thousand, one hundred sixty-one".