1156544 has 28 divisors (see below), whose sum is σ = 2432304. Its totient is φ = 543744.

The previous prime is 1156541. The next prime is 1156553. The reversal of 1156544 is 4456511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557 + ... + 1619.

It is an arithmetic number, because the mean of its divisors is an integer number (86868).

2^1156544 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 1156544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216152).

1156544 is an abundant number, since it is smaller than the sum of its proper divisors (1275760).

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

1156544 is a wasteful number, since it uses less digits than its factorization.

1156544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1082 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 1156544 is about 1075.4273569145. The cubic root of 1156544 is about 104.9673065259.

The spelling of 1156544 in words is "one million, one hundred fifty-six thousand, five hundred forty-four".