11049561 has 16 divisors (see below), whose sum is σ = 16542400. Its totient is φ = 7288704.

The previous prime is 11049557. The next prime is 11049587. The reversal of 11049561 is 16594011.

11049561 is a `hidden beast` number, since 110 + 495 + 61 = 666.

It is not a de Polignac number, because 11049561 - 2² = 11049557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11049161) 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 15 ways as a sum of consecutive naturals, for example, 510 + ... + 4728.

It is an arithmetic number, because the mean of its divisors is an integer number (1033900).

Almost surely, 2^11049561 is an apocalyptic number.

It is an amenable number.

11049561 is a deficient number, since it is larger than the sum of its proper divisors (5492839).

11049561 is an equidigital number, since it uses as much as digits as its factorization.

11049561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325 (or 4319 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 11049561 is about 3324.0879952252. The cubic root of 11049561 is about 222.7315167921.

The spelling of 11049561 in words is "eleven million, forty-nine thousand, five hundred sixty-one".