11561471 has 2 divisors, whose sum is σ = 11561472. Its totient is φ = 11561470.

The previous prime is 11561461. The next prime is 11561477. The reversal of 11561471 is 17416511.

It is a happy number.

11561471 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11561471 - 2¹⁰ = 11560447 is a prime.

It is a super-3 number, since 3×11561471³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 11561471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11561477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5780735 + 5780736.

It is an arithmetic number, because the mean of its divisors is an integer number (5780736).

Almost surely, 2^11561471 is an apocalyptic number.

11561471 is a deficient number, since it is larger than the sum of its proper divisors (1).

11561471 is an equidigital number, since it uses as much as digits as its factorization.

11561471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 26.

The square root of 11561471 is about 3400.2163166481. The cubic root of 11561471 is about 226.1193342153.

Adding to 11561471 its reverse (17416511), we get a palindrome (28977982).

The spelling of 11561471 in words is "eleven million, five hundred sixty-one thousand, four hundred seventy-one".