1155006 has 32 divisors (see below), whose sum is σ = 2610720. Its totient is φ = 378432.

The previous prime is 1155001. The next prime is 1155017. The reversal of 1155006 is 6005511.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1155006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3796 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (81585).

2^1155006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305360).

1155006 is an abundant number, since it is smaller than the sum of its proper divisors (1455714).

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

1155006 is a wasteful number, since it uses less digits than its factorization.

1155006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1155006 is about 1074.7120544592. The cubic root of 1155006 is about 104.9207565366.

The spelling of 1155006 in words is "one million, one hundred fifty-five thousand, six".