1155501330 has 16 divisors (see below), whose sum is σ = 2773203264. Its totient is φ = 308133680.

The previous prime is 1155501323. The next prime is 1155501337. The reversal of 1155501330 is 331055511.

It is an interprime number because it is at equal distance from previous prime (1155501323) and next prime (1155501337).

It is a self number, because there is not a number n which added to its sum of digits gives 1155501330.

It is not an unprimeable number, because it can be changed into a prime (1155501337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19258326 + ... + 19258385.

It is an arithmetic number, because the mean of its divisors is an integer number (173325204).

Almost surely, 2^1155501330 is an apocalyptic number.

1155501330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155501330 is an abundant number, since it is smaller than the sum of its proper divisors (1617701934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155501330 is a wasteful number, since it uses less digits than its factorization.

1155501330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38516721.

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 1155501330 is about 33992.6658266162. The cubic root of 1155501330 is about 1049.3575298704.

Adding to 1155501330 its reverse (331055511), we get a palindrome (1486556841).

The spelling of 1155501330 in words is "one billion, one hundred fifty-five million, five hundred one thousand, three hundred thirty".