2155316 has 6 divisors (see below), whose sum is σ = 3771810. Its totient is φ = 1077656.

The previous prime is 2155297. The next prime is 2155319. The reversal of 2155316 is 6135512.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 23716 = 1460^2 + 154^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2155291 and 2155300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269411 + ... + 269418.

It is an arithmetic number, because the mean of its divisors is an integer number (628635).

2^2155316 is an apocalyptic number.

It is an amenable number.

2155316 is a deficient number, since it is larger than the sum of its proper divisors (1616494).

2155316 is a wasteful number, since it uses less digits than its factorization.

2155316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538833 (or 538831 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 2155316 is about 1468.0994516721. The cubic root of 2155316 is about 129.1725751488.

The spelling of 2155316 in words is "two million, one hundred fifty-five thousand, three hundred sixteen".