11552661 has 12 divisors (see below), whose sum is σ = 16732300. Its totient is φ = 7680960.

The previous prime is 11552659. The next prime is 11552663. The reversal of 11552661 is 16625511.

It is a happy number.

11552661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11552659) and next prime (11552663).

It can be written as a sum of positive squares in 2 ways, for example, as 463761 + 11088900 = 681^2 + 3330^2 .

It is not a de Polignac number, because 11552661 - 2¹ = 11552659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2265 + ... + 5313.

Almost surely, 2^11552661 is an apocalyptic number.

It is an amenable number.

11552661 is a deficient number, since it is larger than the sum of its proper divisors (5179639).

11552661 is a wasteful number, since it uses less digits than its factorization.

11552661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476 (or 3473 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 11552661 is about 3398.9205639438. The cubic root of 11552661 is about 226.0618842721.

The spelling of 11552661 in words is "eleven million, five hundred fifty-two thousand, six hundred sixty-one".