1155414321 has 16 divisors (see below), whose sum is σ = 1712430720. Its totient is φ = 769958640.

The previous prime is 1155414313. The next prime is 1155414349. The reversal of 1155414321 is 1234145511.

1155414321 is a `hidden beast` number, since 115 + 541 + 4 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 1155414321 - 2³ = 1155414313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1155414371) 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, 71011 + ... + 85751.

It is an arithmetic number, because the mean of its divisors is an integer number (107026920).

Almost surely, 2^1155414321 is an apocalyptic number.

It is an amenable number.

1155414321 is a deficient number, since it is larger than the sum of its proper divisors (557016399).

1155414321 is a wasteful number, since it uses less digits than its factorization.

1155414321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17653 (or 17647 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1155414321 is about 33991.3859823338. The cubic root of 1155414321 is about 1049.3311904110.

Adding to 1155414321 its reverse (1234145511), we get a palindrome (2389559832).

The spelling of 1155414321 in words is "one billion, one hundred fifty-five million, four hundred fourteen thousand, three hundred twenty-one".