4566181 has 2 divisors, whose sum is σ = 4566182. Its totient is φ = 4566180.

The previous prime is 4566179. The next prime is 4566203. The reversal of 4566181 is 1816654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4137156 + 429025 = 2034^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 4566181 - 2¹ = 4566179 is a prime.

It is a super-2 number, since 2×4566181² = 41700017849522, which contains 22 as substring.

Together with 4566179, it forms a pair of twin primes.

4566181 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4566131) 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, 2283090 + 2283091.

It is an arithmetic number, because the mean of its divisors is an integer number (2283091).

Almost surely, 2^4566181 is an apocalyptic number.

It is an amenable number.

4566181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4566181 is an equidigital number, since it uses as much as digits as its factorization.

4566181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 4566181 is about 2136.8624195301. The cubic root of 4566181 is about 165.9017781545.

The spelling of 4566181 in words is "four million, five hundred sixty-six thousand, one hundred eighty-one".