2115560 has 16 divisors (see below), whose sum is σ = 4760100. Its totient is φ = 846208.

The previous prime is 2115539. The next prime is 2115571. The reversal of 2115560 is 655112.

It can be written as a sum of positive squares in 2 ways, for example, as 2114116 + 1444 = 1454^2 + 38^2 .

It is a super-2 number, since 2×2115560² = 8951188227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26405 + ... + 26484.

2^2115560 is an apocalyptic number.

2115560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115560 is an abundant number, since it is smaller than the sum of its proper divisors (2644540).

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

2115560 is a wasteful number, since it uses less digits than its factorization.

2115560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52900 (or 52896 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2115560 is about 1454.4964764481. The cubic root of 2115560 is about 128.3734212575.

The spelling of 2115560 in words is "two million, one hundred fifteen thousand, five hundred sixty".