2251116 has 36 divisors (see below), whose sum is σ = 6503952. Its totient is φ = 643104.

The previous prime is 2251111. The next prime is 2251121. The reversal of 2251116 is 6111522.

It is an interprime number because it is at equal distance from previous prime (2251111) and next prime (2251121).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2251111) 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, 4215 + ... + 4718.

2^2251116 is an apocalyptic number.

It is an amenable number.

2251116 is an abundant number, since it is smaller than the sum of its proper divisors (4252836).

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

2251116 is a wasteful number, since it uses less digits than its factorization.

2251116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8950 (or 8945 counting only the distinct ones).

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

The square root of 2251116 is about 1500.3719538834. The cubic root of 2251116 is about 131.0587309250.

Adding to 2251116 its reverse (6111522), we get a palindrome (8362638).

The spelling of 2251116 in words is "two million, two hundred fifty-one thousand, one hundred sixteen".