1133550 has 72 divisors (see below), whose sum is σ = 3336840. Its totient is φ = 273600.

The previous prime is 1133537. The next prime is 1133551. The reversal of 1133550 is 553311.

It is a happy number.

1133550 is a `hidden beast` number, since 113 + 3 + 550 = 666.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4836 + ... + 5064.

It is an arithmetic number, because the mean of its divisors is an integer number (46345).

2^1133550 is an apocalyptic number.

1133550 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 1133550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668420).

1133550 is an abundant number, since it is smaller than the sum of its proper divisors (2203290).

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

1133550 is a wasteful number, since it uses less digits than its factorization.

1133550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 1133550 is about 1064.6830514289. The cubic root of 1133550 is about 104.2670037651.

Adding to 1133550 its reverse (553311), we get a palindrome (1686861).

It can be divided in two parts, 113 and 3550, that added together give a palindrome (3663).

The spelling of 1133550 in words is "one million, one hundred thirty-three thousand, five hundred fifty".