11200561 has 8 divisors (see below), whose sum is σ = 11390760. Its totient is φ = 11011968.

The previous prime is 11200559. The next prime is 11200571. The reversal of 11200561 is 16500211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18225 + 11182336 = 135^2 + 3344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11200561 - 2¹ = 11200559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11200531) 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 7 ways as a sum of consecutive naturals, for example, 28015 + ... + 28411.

It is an arithmetic number, because the mean of its divisors is an integer number (1423845).

Almost surely, 2^11200561 is an apocalyptic number.

It is an amenable number.

11200561 is a deficient number, since it is larger than the sum of its proper divisors (190199).

11200561 is an equidigital number, since it uses as much as digits as its factorization.

11200561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11200561 is about 3346.7239204930. The cubic root of 11200561 is about 223.7415239759.

Adding to 11200561 its reverse (16500211), we get a palindrome (27700772).

The spelling of 11200561 in words is "eleven million, two hundred thousand, five hundred sixty-one".