1155301056 has 560 divisors, whose sum is σ = 4406026240. Its totient is φ = 291133440.

The previous prime is 1155301019. The next prime is 1155301057. The reversal of 1155301056 is 6501035511.

1155301056 is a `hidden beast` number, since 1 + 1 + 553 + 0 + 105 + 6 = 666.

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 (1155301057) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14624025 + ... + 14624103.

It is an arithmetic number, because the mean of its divisors is an integer number (7867904).

Almost surely, 2^1155301056 is an apocalyptic number.

1155301056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155301056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203013120).

1155301056 is an abundant number, since it is smaller than the sum of its proper divisors (3250725184).

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

1155301056 is a wasteful number, since it uses less digits than its factorization.

1155301056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 1155301056 is about 33989.7198576275. The cubic root of 1155301056 is about 1049.2969007255.

Adding to 1155301056 its reverse (6501035511), we get a palindrome (7656336567).

The spelling of 1155301056 in words is "one billion, one hundred fifty-five million, three hundred one thousand, fifty-six".