2155516 has 12 divisors (see below), whose sum is σ = 4115160. Its totient is φ = 979760.

The previous prime is 2155513. The next prime is 2155519. The reversal of 2155516 is 6155512.

2155516 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2155513) and next prime (2155519).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155511) 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, 24451 + ... + 24538.

It is an arithmetic number, because the mean of its divisors is an integer number (342930).

2^2155516 is an apocalyptic number.

It is an amenable number.

2155516 is a deficient number, since it is larger than the sum of its proper divisors (1959644).

2155516 is a wasteful number, since it uses less digits than its factorization.

2155516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49004 (or 49002 counting only the distinct ones).

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

The square root of 2155516 is about 1468.1675653685. The cubic root of 2155516 is about 129.1765704974.

The spelling of 2155516 in words is "two million, one hundred fifty-five thousand, five hundred sixteen".