1153305 has 16 divisors (see below), whose sum is σ = 2050560. Its totient is φ = 615024.

The previous prime is 1153277. The next prime is 1153309. The reversal of 1153305 is 5033511.

It is a happy number.

1153305 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 1153305 - 2⁶ = 1153241 is a prime.

It is a super-2 number, since 2×1153305² = 2660224846050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1153309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4137 + ... + 4406.

It is an arithmetic number, because the mean of its divisors is an integer number (128160).

2^1153305 is an apocalyptic number.

1153305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1153305 is a deficient number, since it is larger than the sum of its proper divisors (897255).

1153305 is an equidigital number, since it uses as much as digits as its factorization.

1153305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8557 (or 8551 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 1153305 is about 1073.9203881108. The cubic root of 1153305 is about 104.8692249454.

Adding to 1153305 its reverse (5033511), we get a palindrome (6186816).

The spelling of 1153305 in words is "one million, one hundred fifty-three thousand, three hundred five".