2291015 has 8 divisors (see below), whose sum is σ = 2808000. Its totient is φ = 1793632.

The previous prime is 2290999. The next prime is 2291017. The reversal of 2291015 is 5101922.

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

It is a cyclic number.

It is not a de Polignac number, because 2291015 - 2⁴ = 2290999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291017) 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, 4640 + ... + 5109.

It is an arithmetic number, because the mean of its divisors is an integer number (351000).

2^2291015 is an apocalyptic number.

2291015 is a deficient number, since it is larger than the sum of its proper divisors (516985).

2291015 is an equidigital number, since it uses as much as digits as its factorization.

2291015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9801.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 2291015 is about 1513.6099233290. The cubic root of 2291015 is about 131.8285001111.

Adding to 2291015 its reverse (5101922), we get a palindrome (7392937).

The spelling of 2291015 in words is "two million, two hundred ninety-one thousand, fifteen".