2215287 has 12 divisors (see below), whose sum is σ = 3388320. Its totient is φ = 1389888.

The previous prime is 2215277. The next prime is 2215303. The reversal of 2215287 is 7825122.

It is not a de Polignac number, because 2215287 - 2⁷ = 2215159 is a prime.

It is a d-powerful number, because it can be written as 2 + 2¹⁷ + 1 + 5⁹ + 2¹⁷ + 8 + 7 .

It is a self number, because there is not a number n which added to its sum of digits gives 2215287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215217) 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 11 ways as a sum of consecutive naturals, for example, 7087 + ... + 7392.

It is an arithmetic number, because the mean of its divisors is an integer number (282360).

2^2215287 is an apocalyptic number.

2215287 is a deficient number, since it is larger than the sum of its proper divisors (1173033).

2215287 is a wasteful number, since it uses less digits than its factorization.

2215287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14502 (or 14499 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2215287 is about 1488.3840230263. The cubic root of 2215287 is about 130.3596941873.

The spelling of 2215287 in words is "two million, two hundred fifteen thousand, two hundred eighty-seven".