11042550 has 72 divisors (see below), whose sum is σ = 30292704. Its totient is φ = 2882880.

The previous prime is 11042531. The next prime is 11042561. The reversal of 11042550 is 5524011.

11042550 is a `hidden beast` number, since 110 + 4 + 2 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23619 + ... + 24081.

It is an arithmetic number, because the mean of its divisors is an integer number (420732).

Almost surely, 2^11042550 is an apocalyptic number.

11042550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11042550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15146352).

11042550 is an abundant number, since it is smaller than the sum of its proper divisors (19250154).

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

11042550 is a wasteful number, since it uses less digits than its factorization.

11042550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 11042550 is about 3323.0332529182. The cubic root of 11042550 is about 222.6843987496.

Adding to 11042550 its reverse (5524011), we get a palindrome (16566561).

The spelling of 11042550 in words is "eleven million, forty-two thousand, five hundred fifty".