2215913 has 8 divisors (see below), whose sum is σ = 2665920. Its totient is φ = 1799280.

The previous prime is 2215903. The next prime is 2215921. The reversal of 2215913 is 3195122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2215913 - 2¹² = 2211817 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215903) 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 7 ways as a sum of consecutive naturals, for example, 8198 + ... + 8463.

It is an arithmetic number, because the mean of its divisors is an integer number (333240).

2^2215913 is an apocalyptic number.

It is an amenable number.

2215913 is a deficient number, since it is larger than the sum of its proper divisors (450007).

2215913 is a wasteful number, since it uses less digits than its factorization.

2215913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16687.

The product of its digits is 540, while the sum is 23.

The square root of 2215913 is about 1488.5943033614. The cubic root of 2215913 is about 130.3719721274.

The spelling of 2215913 in words is "two million, two hundred fifteen thousand, nine hundred thirteen".