1165556 has 12 divisors (see below), whose sum is σ = 2331168. Its totient is φ = 499512.

The previous prime is 1165531. The next prime is 1165579. The reversal of 1165556 is 6555611.

1165556 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20786 + ... + 20841.

It is an arithmetic number, because the mean of its divisors is an integer number (194264).

2^1165556 is an apocalyptic number.

It is an amenable number.

1165556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1165556 is a wasteful number, since it uses less digits than its factorization.

1165556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41638 (or 41636 counting only the distinct ones).

The product of its digits is 4500, while the sum is 29.

The square root of 1165556 is about 1079.6091885493. The cubic root of 1165556 is about 105.2392428302.

It can be divided in two parts, 11655 and 56, that added together give a palindrome (11711).

The spelling of 1165556 in words is "one million, one hundred sixty-five thousand, five hundred fifty-six".