1154055 has 32 divisors (see below), whose sum is σ = 2188800. Its totient is φ = 508032.

The previous prime is 1154051. The next prime is 1154119. The reversal of 1154055 is 5504511.

It is not a de Polignac number, because 1154055 - 2² = 1154051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1154055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2856 + ... + 3234.

It is an arithmetic number, because the mean of its divisors is an integer number (68400).

2^1154055 is an apocalyptic number.

1154055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1154055 is a deficient number, since it is larger than the sum of its proper divisors (1034745).

1154055 is a wasteful number, since it uses less digits than its factorization.

1154055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

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

The square root of 1154055 is about 1074.2695192548. The cubic root of 1154055 is about 104.8919523464.

Adding to 1154055 its reverse (5504511), we get a palindrome (6658566).

The spelling of 1154055 in words is "one million, one hundred fifty-four thousand, fifty-five".