1155530 has 8 divisors (see below), whose sum is σ = 2079972. Its totient is φ = 462208.

The previous prime is 1155529. The next prime is 1155569. The reversal of 1155530 is 355511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1142761 + 12769 = 1069^2 + 113^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57767 + ... + 57786.

2^1155530 is an apocalyptic number.

1155530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155530 is a deficient number, since it is larger than the sum of its proper divisors (924442).

1155530 is a wasteful number, since it uses less digits than its factorization.

1155530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115560.

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

The square root of 1155530 is about 1074.9558130454. The cubic root of 1155530 is about 104.9366208594.

The spelling of 1155530 in words is "one million, one hundred fifty-five thousand, five hundred thirty".