4328581 has 2 divisors, whose sum is σ = 4328582. Its totient is φ = 4328580.

The previous prime is 4328579. The next prime is 4328603. The reversal of 4328581 is 1858234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4284900 + 43681 = 2070^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 4328581 - 2¹ = 4328579 is a prime.

It is a super-2 number, since 2×4328581² = 37473226947122, which contains 22 as substring.

Together with 4328579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4328521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2164290 + 2164291.

It is an arithmetic number, because the mean of its divisors is an integer number (2164291).

Almost surely, 2^4328581 is an apocalyptic number.

It is an amenable number.

4328581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4328581 is an equidigital number, since it uses as much as digits as its factorization.

4328581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 4328581 is about 2080.5242127887. The cubic root of 4328581 is about 162.9728209416.

The spelling of 4328581 in words is "four million, three hundred twenty-eight thousand, five hundred eighty-one".