11240557 has 2 divisors, whose sum is σ = 11240558. Its totient is φ = 11240556.

The previous prime is 11240543. The next prime is 11240561. The reversal of 11240557 is 75504211.

11240557 is digitally balanced in base 2, 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., 9126441 + 2114116 = 3021^2 + 1454^2 .

It is an emirp because it is prime and its reverse (75504211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11240557 - 2¹¹ = 11238509 is a prime.

It is equal to p₇₄₁₃₄₆ and since 11240557 and 741346 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11240527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5620278 + 5620279.

It is an arithmetic number, because the mean of its divisors is an integer number (5620279).

Almost surely, 2^11240557 is an apocalyptic number.

It is an amenable number.

11240557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11240557 is an equidigital number, since it uses as much as digits as its factorization.

11240557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 11240557 is about 3352.6939914045. The cubic root of 11240557 is about 224.0075265860.

Adding to 11240557 its reverse (75504211), we get a palindrome (86744768).

The spelling of 11240557 in words is "eleven million, two hundred forty thousand, five hundred fifty-seven".