1155530105 has 4 divisors (see below), whose sum is σ = 1386636132. Its totient is φ = 924424080.

The previous prime is 1155530029. The next prime is 1155530191. The reversal of 1155530105 is 5010355511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117852736 + 1037677369 = 10856^2 + 32213^2 .

It is not a de Polignac number, because 1155530105 - 2⁸ = 1155529849 is a prime.

It is a super-2 number, since 2×1155530105² = 2670499647122622050, which contains 22 as substring.

It is a Duffinian 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, 115553006 + ... + 115553015.

It is an arithmetic number, because the mean of its divisors is an integer number (346659033).

Almost surely, 2^1155530105 is an apocalyptic number.

It is an amenable number.

1155530105 is a deficient number, since it is larger than the sum of its proper divisors (231106027).

1155530105 is an equidigital number, since it uses as much as digits as its factorization.

1155530105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231106026.

The product of its (nonzero) digits is 1875, while the sum is 26.

The square root of 1155530105 is about 33993.0890770462. The cubic root of 1155530105 is about 1049.3662403789.

Adding to 1155530105 its reverse (5010355511), we get a palindrome (6165885616).

The spelling of 1155530105 in words is "one billion, one hundred fifty-five million, five hundred thirty thousand, one hundred five".