11161427 has 2 divisors, whose sum is σ = 11161428. Its totient is φ = 11161426.

The previous prime is 11161393. The next prime is 11161439. The reversal of 11161427 is 72416111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72416111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11161427 - 2¹⁸ = 10899283 is a prime.

It is not a weakly prime, because it can be changed into another prime (11161487) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5580713 + 5580714.

It is an arithmetic number, because the mean of its divisors is an integer number (5580714).

Almost surely, 2^11161427 is an apocalyptic number.

11161427 is a deficient number, since it is larger than the sum of its proper divisors (1).

11161427 is an equidigital number, since it uses as much as digits as its factorization.

11161427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 23.

The square root of 11161427 is about 3340.8721915093. The cubic root of 11161427 is about 223.4806406699.

Adding to 11161427 its reverse (72416111), we get a palindrome (83577538).

The spelling of 11161427 in words is "eleven million, one hundred sixty-one thousand, four hundred twenty-seven".