1085556 has 24 divisors (see below), whose sum is σ = 2576224. Its totient is φ = 355680.

The previous prime is 1085551. The next prime is 1085587. The reversal of 1085556 is 6555801.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085551) 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 7 ways as a sum of consecutive naturals, for example, 10 + ... + 1473.

2^1085556 is an apocalyptic number.

It is an amenable number.

1085556 is an abundant number, since it is smaller than the sum of its proper divisors (1490668).

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

1085556 is a wasteful number, since it uses less digits than its factorization.

1085556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1085556 is about 1041.9001871581. The cubic root of 1085556 is about 102.7741934848.

The spelling of 1085556 in words is "one million, eighty-five thousand, five hundred fifty-six".