1115145 has 12 divisors (see below), whose sum is σ = 1932996. Its totient is φ = 594720.

The previous prime is 1115131. The next prime is 1115189. The reversal of 1115145 is 5415111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 404496 + 710649 = 636^2 + 843^2 .

It is not a de Polignac number, because 1115145 - 2⁵ = 1115113 is a prime.

1115145 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12346 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (161083).

2^1115145 is an apocalyptic number.

1115145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1115145 is a deficient number, since it is larger than the sum of its proper divisors (817851).

1115145 is a wasteful number, since it uses less digits than its factorization.

1115145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24792 (or 24789 counting only the distinct ones).

The product of its digits is 100, while the sum is 18.

The square root of 1115145 is about 1056.0042613550. The cubic root of 1115145 is about 103.6996077921.

The spelling of 1115145 in words is "one million, one hundred fifteen thousand, one hundred forty-five".