2116505 has 8 divisors (see below), whose sum is σ = 2673600. Its totient is φ = 1604016.

The previous prime is 2116501. The next prime is 2116519. The reversal of 2116505 is 5056112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2116505 - 2² = 2116501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2116501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11045 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (334200).

2^2116505 is an apocalyptic number.

It is an amenable number.

2116505 is a deficient number, since it is larger than the sum of its proper divisors (557095).

2116505 is a wasteful number, since it uses less digits than its factorization.

2116505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22303.

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

The square root of 2116505 is about 1454.8212948675. The cubic root of 2116505 is about 128.3925327969.

The spelling of 2116505 in words is "two million, one hundred sixteen thousand, five hundred five".