11445661 has 2 divisors, whose sum is σ = 11445662. Its totient is φ = 11445660.

The previous prime is 11445653. The next prime is 11445671. The reversal of 11445661 is 16654411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 4866436 = 2565^2 + 2206^2 .

It is an emirp because it is prime and its reverse (16654411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11445661 - 2³ = 11445653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11445671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5722830 + 5722831.

It is an arithmetic number, because the mean of its divisors is an integer number (5722831).

Almost surely, 2^11445661 is an apocalyptic number.

It is an amenable number.

11445661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11445661 is an equidigital number, since it uses as much as digits as its factorization.

11445661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 11445661 is about 3383.1436564237. The cubic root of 11445661 is about 225.3617948850.

The spelling of 11445661 in words is "eleven million, four hundred forty-five thousand, six hundred sixty-one".