12093581 has 2 divisors, whose sum is σ = 12093582. Its totient is φ = 12093580.

The previous prime is 12093577. The next prime is 12093583. The reversal of 12093581 is 18539021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12075625 + 17956 = 3475^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 12093581 - 2² = 12093577 is a prime.

It is a super-2 number, since 2×12093581² = 292509402807122, which contains 22 as substring.

Together with 12093583, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12093583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6046790 + 6046791.

It is an arithmetic number, because the mean of its divisors is an integer number (6046791).

Almost surely, 2^12093581 is an apocalyptic number.

It is an amenable number.

12093581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12093581 is an equidigital number, since it uses as much as digits as its factorization.

12093581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12093581 is about 3477.5826374078. The cubic root of 12093581 is about 229.5364387282.

The spelling of 12093581 in words is "twelve million, ninety-three thousand, five hundred eighty-one".