2116251 has 12 divisors (see below), whose sum is σ = 3094728. Its totient is φ = 1393344.

The previous prime is 2116199. The next prime is 2116291. The reversal of 2116251 is 1526112.

It is not a de Polignac number, because 2116251 - 2⁶ = 2116187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2116291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (257894).

2^2116251 is an apocalyptic number.

2116251 is a deficient number, since it is larger than the sum of its proper divisors (978477).

2116251 is a wasteful number, since it uses less digits than its factorization.

2116251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922 (or 2919 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 2116251 is about 1454.7339963031. The cubic root of 2116251 is about 128.3873964978.

The spelling of 2116251 in words is "two million, one hundred sixteen thousand, two hundred fifty-one".