1155241566 has 24 divisors (see below), whose sum is σ = 2515609200. Its totient is φ = 383144256.

The previous prime is 1155241561. The next prime is 1155241597. The reversal of 1155241566 is 6651425511.

1155241566 is a `hidden beast` number, since 1 + 1 + 5 + 52 + 41 + 566 = 666.

It is a super-4 number, since 4×1155241566⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1155241566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155241561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157675 + ... + 164838.

It is an arithmetic number, because the mean of its divisors is an integer number (104817050).

Almost surely, 2^1155241566 is an apocalyptic number.

1155241566 is an abundant number, since it is smaller than the sum of its proper divisors (1360367634).

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

1155241566 is a wasteful number, since it uses less digits than its factorization.

1155241566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322720 (or 322717 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 1155241566 is about 33988.8447288224. The cubic root of 1155241566 is about 1049.2788899095.

The spelling of 1155241566 in words is "one billion, one hundred fifty-five million, two hundred forty-one thousand, five hundred sixty-six".