2156116 has 12 divisors (see below), whose sum is σ = 3812788. Its totient is φ = 1066752.

The previous prime is 2156111. The next prime is 2156117. The reversal of 2156116 is 6116512.

It can be written as a sum of positive squares in 2 ways, for example, as 1587600 + 568516 = 1260^2 + 754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2391 + ... + 3166.

2^2156116 is an apocalyptic number.

It is an amenable number.

2156116 is a deficient number, since it is larger than the sum of its proper divisors (1656672).

2156116 is a wasteful number, since it uses less digits than its factorization.

2156116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5658 (or 5656 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 2156116 is about 1468.3718874999. The cubic root of 2156116 is about 129.1885550604.

The spelling of 2156116 in words is "two million, one hundred fifty-six thousand, one hundred sixteen".