1158544 has 40 divisors (see below), whose sum is σ = 2450240. Its totient is φ = 528768.

The previous prime is 1158541. The next prime is 1158551. The reversal of 1158544 is 4458511.

It is not an unprimeable number, because it can be changed into a prime (1158541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11197 + ... + 11299.

It is an arithmetic number, because the mean of its divisors is an integer number (61256).

2^1158544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225120).

1158544 is an abundant number, since it is smaller than the sum of its proper divisors (1291696).

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

1158544 is a wasteful number, since it uses less digits than its factorization.

1158544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 161 counting only the distinct ones).

The product of its digits is 3200, while the sum is 28.

The square root of 1158544 is about 1076.3568181602. The cubic root of 1158544 is about 105.0277779870.

The spelling of 1158544 in words is "one million, one hundred fifty-eight thousand, five hundred forty-four".