1145544 has 32 divisors (see below), whose sum is σ = 2916000. Its totient is φ = 374912.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145544 is 4455411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (91125).

2^1145544 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 1145544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458000).

1145544 is an abundant number, since it is smaller than the sum of its proper divisors (1770456).

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

1145544 is a wasteful number, since it uses less digits than its factorization.

1145544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 873 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 1145544 is about 1070.3008922728. The cubic root of 1145544 is about 104.6334611874.

The spelling of 1145544 in words is "one million, one hundred forty-five thousand, five hundred forty-four".