13115560 has 16 divisors (see below), whose sum is σ = 29510100. Its totient is φ = 5246208.

The previous prime is 13115537. The next prime is 13115563. The reversal of 13115560 is 6551131.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 427716 = 3562^2 + 654^2 .

It is a super-3 number, since 3×13115560³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (13115563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163905 + ... + 163984.

Almost surely, 2^13115560 is an apocalyptic number.

13115560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13115560 is an abundant number, since it is smaller than the sum of its proper divisors (16394540).

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

13115560 is a wasteful number, since it uses less digits than its factorization.

13115560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327900 (or 327896 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 13115560 is about 3621.5411084233. The cubic root of 13115560 is about 235.8281330316.

Adding to 13115560 its reverse (6551131), we get a palindrome (19666691).

The spelling of 13115560 in words is "thirteen million, one hundred fifteen thousand, five hundred sixty".