11144557 has 2 divisors, whose sum is σ = 11144558. Its totient is φ = 11144556.

The previous prime is 11144543. The next prime is 11144587. The reversal of 11144557 is 75544111.

11144557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6937956 + 4206601 = 2634^2 + 2051^2 .

It is an emirp because it is prime and its reverse (75544111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11144557 - 2⁷ = 11144429 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11144527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572278 + 5572279.

It is an arithmetic number, because the mean of its divisors is an integer number (5572279).

Almost surely, 2^11144557 is an apocalyptic number.

It is an amenable number.

11144557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11144557 is an equidigital number, since it uses as much as digits as its factorization.

11144557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 28.

The square root of 11144557 is about 3338.3464469704. The cubic root of 11144557 is about 223.3679902158.

Adding to 11144557 its reverse (75544111), we get a palindrome (86688668).

It can be divided in two parts, 1114 and 4557, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 11144557 in words is "eleven million, one hundred forty-four thousand, five hundred fifty-seven".