2291215 has 8 divisors (see below), whose sum is σ = 2783088. Its totient is φ = 1810560.

The previous prime is 2291213. The next prime is 2291227. The reversal of 2291215 is 5121922.

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

It is not a de Polignac number, because 2291215 - 2¹ = 2291213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2346 + ... + 3175.

It is an arithmetic number, because the mean of its divisors is an integer number (347886).

2^2291215 is an apocalyptic number.

2291215 is a deficient number, since it is larger than the sum of its proper divisors (491873).

2291215 is an equidigital number, since it uses as much as digits as its factorization.

2291215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609.

The product of its digits is 360, while the sum is 22.

The square root of 2291215 is about 1513.6759891073. The cubic root of 2291215 is about 131.8323361013.

It can be divided in two parts, 229 and 1215, that added together give a square (1444 = 38²).

The spelling of 2291215 in words is "two million, two hundred ninety-one thousand, two hundred fifteen".