11406557 has 2 divisors, whose sum is σ = 11406558. Its totient is φ = 11406556.

The previous prime is 11406553. The next prime is 11406581. The reversal of 11406557 is 75560411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9114361 + 2292196 = 3019^2 + 1514^2 .

It is an emirp because it is prime and its reverse (75560411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11406557 - 2² = 11406553 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 (11406553) 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, 5703278 + 5703279.

It is an arithmetic number, because the mean of its divisors is an integer number (5703279).

Almost surely, 2^11406557 is an apocalyptic number.

It is an amenable number.

11406557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11406557 is an equidigital number, since it uses as much as digits as its factorization.

11406557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 11406557 is about 3377.3594715399. The cubic root of 11406557 is about 225.1048531870.

Adding to 11406557 its reverse (75560411), we get a palindrome (86966968).

The spelling of 11406557 in words is "eleven million, four hundred six thousand, five hundred fifty-seven".