11561148 has 18 divisors (see below), whose sum is σ = 29224104. Its totient is φ = 3853704.

The previous prime is 11561117. The next prime is 11561159. The reversal of 11561148 is 84116511.

11561148 is a `hidden beast` number, since 1 + 1 + 5 + 611 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 160536 + ... + 160607.

Almost surely, 2^11561148 is an apocalyptic number.

11561148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11561148 is an abundant number, since it is smaller than the sum of its proper divisors (17662956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11561148 is a wasteful number, since it uses less digits than its factorization.

11561148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321153 (or 321148 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 11561148 is about 3400.1688193382. The cubic root of 11561148 is about 226.1172284502.

Adding to 11561148 its reverse (84116511), we get a palindrome (95677659).

It can be divided in two parts, 1156 and 1148, that added together give a square (2304 = 48²).

The spelling of 11561148 in words is "eleven million, five hundred sixty-one thousand, one hundred forty-eight".