45866581 has 2 divisors, whose sum is σ = 45866582. Its totient is φ = 45866580.

The previous prime is 45866567. The next prime is 45866593. The reversal of 45866581 is 18566854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34751025 + 11115556 = 5895^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 45866581 - 2²⁵ = 12312149 is a prime.

It is a super-2 number, since 2×45866581² = 4207486505259122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45866881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22933290 + 22933291.

It is an arithmetic number, because the mean of its divisors is an integer number (22933291).

Almost surely, 2^45866581 is an apocalyptic number.

It is an amenable number.

45866581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45866581 is an equidigital number, since it uses as much as digits as its factorization.

45866581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 43.

The square root of 45866581 is about 6772.4870616340. The cubic root of 45866581 is about 357.9580410236.

The spelling of 45866581 in words is "forty-five million, eight hundred sixty-six thousand, five hundred eighty-one".