2215655 has 16 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 1613568.

The previous prime is 2215651. The next prime is 2215667. The reversal of 2215655 is 5565122.

It is a cyclic number.

It is not a de Polignac number, because 2215655 - 2² = 2215651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5594 + ... + 5976.

It is an arithmetic number, because the mean of its divisors is an integer number (181440).

2^2215655 is an apocalyptic number.

2215655 is a deficient number, since it is larger than the sum of its proper divisors (687385).

2215655 is a wasteful number, since it uses less digits than its factorization.

2215655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490.

The product of its digits is 3000, while the sum is 26.

The square root of 2215655 is about 1488.5076419018. The cubic root of 2215655 is about 130.3669121703.

The spelling of 2215655 in words is "two million, two hundred fifteen thousand, six hundred fifty-five".