11390161 has 2 divisors, whose sum is σ = 11390162. Its totient is φ = 11390160.

The previous prime is 11390143. The next prime is 11390167. The reversal of 11390161 is 16109311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11350161 + 40000 = 3369^2 + 200^2 .

It is an emirp because it is prime and its reverse (16109311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11390161 - 2⁹ = 11389649 is a prime.

It is not a weakly prime, because it can be changed into another prime (11390167) 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, 5695080 + 5695081.

It is an arithmetic number, because the mean of its divisors is an integer number (5695081).

Almost surely, 2^11390161 is an apocalyptic number.

It is an amenable number.

11390161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11390161 is an equidigital number, since it uses as much as digits as its factorization.

11390161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 11390161 is about 3374.9312585592. The cubic root of 11390161 is about 224.9969448145.

Adding to 11390161 its reverse (16109311), we get a palindrome (27499472).

The spelling of 11390161 in words is "eleven million, three hundred ninety thousand, one hundred sixty-one".