2215791 has 12 divisors (see below), whose sum is σ = 3219840. Its totient is φ = 1468320.

The previous prime is 2215789. The next prime is 2215793. The reversal of 2215791 is 1975122.

It is an interprime number because it is at equal distance from previous prime (2215789) and next prime (2215793).

It is not a de Polignac number, because 2215791 - 2¹ = 2215789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1075 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (268320).

2^2215791 is an apocalyptic number.

2215791 is a deficient number, since it is larger than the sum of its proper divisors (1004049).

2215791 is a wasteful number, since it uses less digits than its factorization.

2215791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1483 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2215791 is about 1488.5533245403. The cubic root of 2215791 is about 130.3695794835.

The spelling of 2215791 in words is "two million, two hundred fifteen thousand, seven hundred ninety-one".