2291515 has 8 divisors (see below), whose sum is σ = 2911680. Its totient is φ = 1725312.

The previous prime is 2291491. The next prime is 2291539. The reversal of 2291515 is 5151922.

It is an interprime number because it is at equal distance from previous prime (2291491) and next prime (2291539).

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 2291515 - 2¹¹ = 2289467 is a prime.

2291515 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2291515.

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, 13395 + ... + 13564.

It is an arithmetic number, because the mean of its divisors is an integer number (363960).

2^2291515 is an apocalyptic number.

2291515 is a deficient number, since it is larger than the sum of its proper divisors (620165).

2291515 is a wasteful number, since it uses less digits than its factorization.

2291515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26981.

The product of its digits is 900, while the sum is 25.

The square root of 2291515 is about 1513.7750823686. The cubic root of 2291515 is about 131.8380896679.

The spelling of 2291515 in words is "two million, two hundred ninety-one thousand, five hundred fifteen".