1155411345 has 32 divisors (see below), whose sum is σ = 2021629824. Its totient is φ = 558835200.

The previous prime is 1155411343. The next prime is 1155411353. The reversal of 1155411345 is 5431145511.

It is not a de Polignac number, because 1155411345 - 2¹ = 1155411343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155411343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61149 + ... + 77781.

It is an arithmetic number, because the mean of its divisors is an integer number (63175932).

Almost surely, 2^1155411345 is an apocalyptic number.

1155411345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155411345 is a deficient number, since it is larger than the sum of its proper divisors (866218479).

1155411345 is a wasteful number, since it uses less digits than its factorization.

1155411345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17073.

The product of its digits is 6000, while the sum is 30.

The square root of 1155411345 is about 33991.3422065090. The cubic root of 1155411345 is about 1049.3302894897.

Adding to 1155411345 its reverse (5431145511), we get a palindrome (6586556856).

It can be divided in two parts, 115541 and 1345, that added together give a triangular number (116886 = T₄₈₃).

The spelling of 1155411345 in words is "one billion, one hundred fifty-five million, four hundred eleven thousand, three hundred forty-five".