11375557 has 2 divisors, whose sum is σ = 11375558. Its totient is φ = 11375556.

The previous prime is 11375531. The next prime is 11375563. The reversal of 11375557 is 75557311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7986276 + 3389281 = 2826^2 + 1841^2 .

It is an emirp because it is prime and its reverse (75557311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11375557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11375587) 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, 5687778 + 5687779.

It is an arithmetic number, because the mean of its divisors is an integer number (5687779).

Almost surely, 2^11375557 is an apocalyptic number.

It is an amenable number.

11375557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11375557 is an equidigital number, since it uses as much as digits as its factorization.

11375557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18375, while the sum is 34.

The square root of 11375557 is about 3372.7669649710. The cubic root of 11375557 is about 224.9007430513.

The spelling of 11375557 in words is "eleven million, three hundred seventy-five thousand, five hundred fifty-seven".