2116555 has 24 divisors (see below), whose sum is σ = 3028752. Its totient is φ = 1415232.

The previous prime is 2116537. The next prime is 2116559. The reversal of 2116555 is 5556112.

It is not a de Polignac number, because 2116555 - 2⁵ = 2116523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12904 + ... + 13066.

It is an arithmetic number, because the mean of its divisors is an integer number (126198).

2^2116555 is an apocalyptic number.

2116555 is a deficient number, since it is larger than the sum of its proper divisors (912197).

2116555 is a wasteful number, since it uses less digits than its factorization.

2116555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 228 counting only the distinct ones).

The product of its digits is 1500, while the sum is 25.

The square root of 2116555 is about 1454.8384790072. The cubic root of 2116555 is about 128.3935438309.

The spelling of 2116555 in words is "two million, one hundred sixteen thousand, five hundred fifty-five".