1155045 has 8 divisors (see below), whose sum is σ = 1848096. Its totient is φ = 616016.

The previous prime is 1155019. The next prime is 1155053. The reversal of 1155045 is 5405511.

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

It is a cyclic number.

It is not a de Polignac number, because 1155045 - 2⁸ = 1154789 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 38487 + ... + 38516.

It is an arithmetic number, because the mean of its divisors is an integer number (231012).

2^1155045 is an apocalyptic number.

1155045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155045 is a deficient number, since it is larger than the sum of its proper divisors (693051).

1155045 is an equidigital number, since it uses as much as digits as its factorization.

1155045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77011.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1155045 is about 1074.7301987011. The cubic root of 1155045 is about 104.9219374434.

The spelling of 1155045 in words is "one million, one hundred fifty-five thousand, forty-five".