1155145 has 8 divisors (see below), whose sum is σ = 1400256. Its totient is φ = 914736.

The previous prime is 1155127. The next prime is 1155149. The reversal of 1155145 is 5415511.

It is a happy number.

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 1155145 - 2⁷ = 1155017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155149) 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 7 ways as a sum of consecutive naturals, for example, 607 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (175032).

2^1155145 is an apocalyptic number.

It is an amenable number.

1155145 is a deficient number, since it is larger than the sum of its proper divisors (245111).

1155145 is a wasteful number, since it uses less digits than its factorization.

1155145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its digits is 500, while the sum is 22.

The square root of 1155145 is about 1074.7767209984. The cubic root of 1155145 is about 104.9249652882.

The spelling of 1155145 in words is "one million, one hundred fifty-five thousand, one hundred forty-five".