1153055 has 4 divisors (see below), whose sum is σ = 1383672. Its totient is φ = 922440.

The previous prime is 1153049. The next prime is 1153057. The reversal of 1153055 is 5503511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5503511 = 13 ⋅423347.

It is not a de Polignac number, because 1153055 - 2⁸ = 1152799 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 (1153057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115301 + ... + 115310.

It is an arithmetic number, because the mean of its divisors is an integer number (345918).

2^1153055 is an apocalyptic number.

1153055 is a deficient number, since it is larger than the sum of its proper divisors (230617).

1153055 is an equidigital number, since it uses as much as digits as its factorization.

1153055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230616.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 1153055 is about 1073.8039858373. The cubic root of 1153055 is about 104.8616469556.

Adding to 1153055 its reverse (5503511), we get a palindrome (6656566).

The spelling of 1153055 in words is "one million, one hundred fifty-three thousand, fifty-five".