11561006 has 16 divisors (see below), whose sum is σ = 18332160. Its totient is φ = 5452920.

The previous prime is 11560981. The next prime is 11561021. The reversal of 11561006 is 60016511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11171 + ... + 12161.

It is an arithmetic number, because the mean of its divisors is an integer number (1145760).

Almost surely, 2^11561006 is an apocalyptic number.

11561006 is a deficient number, since it is larger than the sum of its proper divisors (6771154).

11561006 is a wasteful number, since it uses less digits than its factorization.

11561006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 11561006 is about 3400.1479379580. The cubic root of 11561006 is about 226.1163026835.

Adding to 11561006 its reverse (60016511), we get a palindrome (71577517).

The spelling of 11561006 in words is "eleven million, five hundred sixty-one thousand, six".