12000581 has 2 divisors, whose sum is σ = 12000582. Its totient is φ = 12000580.

The previous prime is 12000563. The next prime is 12000587. The reversal of 12000581 is 18500021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6076225 + 5924356 = 2465^2 + 2434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000581 is a prime.

It is a super-2 number, since 2×12000581² = 288027888675122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12000587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000290 + 6000291.

It is an arithmetic number, because the mean of its divisors is an integer number (6000291).

Almost surely, 2^12000581 is an apocalyptic number.

It is an amenable number.

12000581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000581 is an equidigital number, since it uses as much as digits as its factorization.

12000581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 12000581 is about 3464.1854742493. The cubic root of 12000581 is about 228.9465433342.

The spelling of 12000581 in words is "twelve million, five hundred eighty-one", and thus it is an aban number.