2291497 has 8 divisors (see below), whose sum is σ = 2479680. Its totient is φ = 2105040.

The previous prime is 2291491. The next prime is 2291539. The reversal of 2291497 is 7941922.

It is a happy number.

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 2291497 - 2⁷ = 2291369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291491) 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, 4422 + ... + 4912.

It is an arithmetic number, because the mean of its divisors is an integer number (309960).

2^2291497 is an apocalyptic number.

It is an amenable number.

2291497 is a deficient number, since it is larger than the sum of its proper divisors (188183).

2291497 is a wasteful number, since it uses less digits than its factorization.

2291497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 9072, while the sum is 34.

The square root of 2291497 is about 1513.7691369558. The cubic root of 2291497 is about 131.8377444681.

It can be divided in two parts, 22 and 91497, that added together give a palindrome (91519).

The spelling of 2291497 in words is "two million, two hundred ninety-one thousand, four hundred ninety-seven".