1103155560 has 192 divisors, whose sum is σ = 3915147600. Its totient is φ = 267743232.

The previous prime is 1103155549. The next prime is 1103155567. The reversal of 1103155560 is 655513011.

1103155560 is a `hidden beast` number, since 1 + 103 + 1 + 5 + 556 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 209265156 + 893890404 = 14466^2 + 29898^2 .

It is not an unprimeable number, because it can be changed into a prime (1103155567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 340026 + ... + 343254.

Almost surely, 2^1103155560 is an apocalyptic number.

1103155560 is a gapful number since it is divisible by the number (10) 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 1103155560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1957573800).

1103155560 is an abundant number, since it is smaller than the sum of its proper divisors (2811992040).

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

1103155560 is a wasteful number, since it uses less digits than its factorization.

1103155560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332 (or 3325 counting only the distinct ones).

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

The square root of 1103155560 is about 33213.7856920888. The cubic root of 1103155560 is about 1033.2662705928.

Adding to 1103155560 its reverse (655513011), we get a palindrome (1758668571).

The spelling of 1103155560 in words is "one billion, one hundred three million, one hundred fifty-five thousand, five hundred sixty".