1115538 has 8 divisors (see below), whose sum is σ = 2231088. Its totient is φ = 371844.

The previous prime is 1115533. The next prime is 1115539. The reversal of 1115538 is 8355111.

It is a sphenic number, since it is the product of 3 distinct primes.

1115538 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1115531) 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 3 ways as a sum of consecutive naturals, for example, 92956 + ... + 92967.

It is an arithmetic number, because the mean of its divisors is an integer number (278886).

2^1115538 is an apocalyptic number.

1115538 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.

1115538 is a wasteful number, since it uses less digits than its factorization.

1115538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185928.

The product of its digits is 600, while the sum is 24.

The square root of 1115538 is about 1056.1903237580. The cubic root of 1115538 is about 103.7117883184.

It can be divided in two parts, 1115 and 538, that added together give a triangular number (1653 = T₅₇).

The spelling of 1115538 in words is "one million, one hundred fifteen thousand, five hundred thirty-eight".