11250581 has 2 divisors, whose sum is σ = 11250582. Its totient is φ = 11250580.

The previous prime is 11250539. The next prime is 11250599. The reversal of 11250581 is 18505211.

11250581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 1359556 = 3145^2 + 1166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11250581 is a prime.

It is a super-2 number, since 2×11250581² = 253151145675122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11250181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5625290 + 5625291.

It is an arithmetic number, because the mean of its divisors is an integer number (5625291).

Almost surely, 2^11250581 is an apocalyptic number.

It is an amenable number.

11250581 is a deficient number, since it is larger than the sum of its proper divisors (1).

11250581 is an equidigital number, since it uses as much as digits as its factorization.

11250581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 11250581 is about 3354.1885754978. The cubic root of 11250581 is about 224.0740945891.

Adding to 11250581 its reverse (18505211), we get a palindrome (29755792).

The spelling of 11250581 in words is "eleven million, two hundred fifty thousand, five hundred eighty-one".