1154155 has 8 divisors (see below), whose sum is σ = 1458000. Its totient is φ = 874656.

The previous prime is 1154129. The next prime is 1154159. The reversal of 1154155 is 5514511.

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 1154155 - 2⁵ = 1154123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5980 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (182250).

2^1154155 is an apocalyptic number.

1154155 is a deficient number, since it is larger than the sum of its proper divisors (303845).

1154155 is a wasteful number, since it uses less digits than its factorization.

1154155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12173.

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

The square root of 1154155 is about 1074.3160615015. The cubic root of 1154155 is about 104.8949819225.

Adding to 1154155 its reverse (5514511), we get a palindrome (6668666).

The spelling of 1154155 in words is "one million, one hundred fifty-four thousand, one hundred fifty-five".