2191415 has 8 divisors (see below), whose sum is σ = 2667168. Its totient is φ = 1728160.

The previous prime is 2191393. The next prime is 2191429. The reversal of 2191415 is 5141912.

It is a happy number.

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

It is not a de Polignac number, because 2191415 - 2⁸ = 2191159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (333396).

2^2191415 is an apocalyptic number.

2191415 is a deficient number, since it is larger than the sum of its proper divisors (475753).

2191415 is an equidigital number, since it uses as much as digits as its factorization.

2191415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249.

The product of its digits is 360, while the sum is 23.

The square root of 2191415 is about 1480.3428656902. The cubic root of 2191415 is about 129.8897487329.

The spelling of 2191415 in words is "two million, one hundred ninety-one thousand, four hundred fifteen".