1155055 has 8 divisors (see below), whose sum is σ = 1512144. Its totient is φ = 840000.

The previous prime is 1155053. The next prime is 1155061. The reversal of 1155055 is 5505511.

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

It is not a de Polignac number, because 1155055 - 2¹ = 1155053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10446 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (189018).

2^1155055 is an apocalyptic number.

1155055 is a deficient number, since it is larger than the sum of its proper divisors (357089).

1155055 is a wasteful number, since it uses less digits than its factorization.

1155055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21017.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 1155055 is about 1074.7348510214. The cubic root of 1155055 is about 104.9222402357.

The spelling of 1155055 in words is "one million, one hundred fifty-five thousand, fifty-five".