11145569 has 2 divisors, whose sum is σ = 11145570. Its totient is φ = 11145568.

The previous prime is 11145551. The next prime is 11145581. The reversal of 11145569 is 96554111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11135569 + 10000 = 3337^2 + 100^2 .

It is an emirp because it is prime and its reverse (96554111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11145569 - 2⁸ = 11145313 is a prime.

It is a super-2 number, since 2×11145569² = 248447416667522, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11145539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572784 + 5572785.

It is an arithmetic number, because the mean of its divisors is an integer number (5572785).

Almost surely, 2^11145569 is an apocalyptic number.

It is an amenable number.

11145569 is a deficient number, since it is larger than the sum of its proper divisors (1).

11145569 is an equidigital number, since it uses as much as digits as its factorization.

11145569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 32.

The square root of 11145569 is about 3338.4980155753. The cubic root of 11145569 is about 223.3747511116.

The spelling of 11145569 in words is "eleven million, one hundred forty-five thousand, five hundred sixty-nine".