9144581 has 2 divisors, whose sum is σ = 9144582. Its totient is φ = 9144580.

The previous prime is 9144563. The next prime is 9144617. The reversal of 9144581 is 1854419.

9144581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8031556 + 1113025 = 2834^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 9144581 - 2¹⁸ = 8882437 is a prime.

It is a super-2 number, since 2×9144581² = 167246723331122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9144511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4572290 + 4572291.

It is an arithmetic number, because the mean of its divisors is an integer number (4572291).

Almost surely, 2^9144581 is an apocalyptic number.

It is an amenable number.

9144581 is a deficient number, since it is larger than the sum of its proper divisors (1).

9144581 is an equidigital number, since it uses as much as digits as its factorization.

9144581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 9144581 is about 3024.0008267195. Note that the first 3 decimals coincide. The cubic root of 9144581 is about 209.1163245213.

The spelling of 9144581 in words is "nine million, one hundred forty-four thousand, five hundred eighty-one".