1111506 has 24 divisors (see below), whose sum is σ = 2445072. Its totient is φ = 336600.

The previous prime is 1111499. The next prime is 1111531. The reversal of 1111506 is 6051111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40 + ... + 1491.

It is an arithmetic number, because the mean of its divisors is an integer number (101878).

2^1111506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222536).

1111506 is an abundant number, since it is smaller than the sum of its proper divisors (1333566).

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

1111506 is a wasteful number, since it uses less digits than its factorization.

1111506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1111506 is about 1054.2798489965. The cubic root of 1111506 is about 103.5866855277.

Adding to 1111506 its reverse (6051111), we get a palindrome (7162617).

It can be divided in two parts, 111150 and 6, that added together give a triangular number (111156 = T₄₇₁).

The spelling of 1111506 in words is "one million, one hundred eleven thousand, five hundred six".