1155049 has 8 divisors (see below), whose sum is σ = 1329728. Its totient is φ = 982800.

The previous prime is 1155019. The next prime is 1155053. The reversal of 1155049 is 9405511.

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

It is not a de Polignac number, because 1155049 - 2⁵ = 1155017 is a prime.

It is a Duffinian number.

1155049 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1155019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574 + ... + 1624.

It is an arithmetic number, because the mean of its divisors is an integer number (166216).

2^1155049 is an apocalyptic number.

It is an amenable number.

1155049 is a deficient number, since it is larger than the sum of its proper divisors (174679).

1155049 is a wasteful number, since it uses less digits than its factorization.

1155049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1155049 is about 1074.7320596316. The cubic root of 1155049 is about 104.9220585605.

The spelling of 1155049 in words is "one million, one hundred fifty-five thousand, forty-nine".