1131546 has 32 divisors (see below), whose sum is σ = 2479680. Its totient is φ = 342144.

The previous prime is 1131523. The next prime is 1131547. The reversal of 1131546 is 6451311.

It is not an unprimeable number, because it can be changed into a prime (1131547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6861 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (77490).

2^1131546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239840).

1131546 is an abundant number, since it is smaller than the sum of its proper divisors (1348134).

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

1131546 is a wasteful number, since it uses less digits than its factorization.

1131546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270.

The product of its digits is 360, while the sum is 21.

The square root of 1131546 is about 1063.7415099544. The cubic root of 1131546 is about 104.2055230684.

Adding to 1131546 its reverse (6451311), we get a palindrome (7582857).

The spelling of 1131546 in words is "one million, one hundred thirty-one thousand, five hundred forty-six".