45664169 has 2 divisors, whose sum is σ = 45664170. Its totient is φ = 45664168.

The previous prime is 45664139. The next prime is 45664189. The reversal of 45664169 is 96146654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42406144 + 3258025 = 6512^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 45664169 - 2⁸ = 45663913 is a prime.

It is a super-2 number, since 2×45664169² = 4170432660921122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (45664139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22832084 + 22832085.

It is an arithmetic number, because the mean of its divisors is an integer number (22832085).

Almost surely, 2^45664169 is an apocalyptic number.

It is an amenable number.

45664169 is a deficient number, since it is larger than the sum of its proper divisors (1).

45664169 is an equidigital number, since it uses as much as digits as its factorization.

45664169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 45664169 is about 6757.5268404942. The cubic root of 45664169 is about 357.4307010281.

The spelling of 45664169 in words is "forty-five million, six hundred sixty-four thousand, one hundred sixty-nine".