2259797 has 4 divisors (see below), whose sum is σ = 2314956. Its totient is φ = 2204640.

The previous prime is 2259791. The next prime is 2259811. The reversal of 2259797 is 7979522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7979522 = 2 ⋅3989761.

It can be written as a sum of positive squares in 2 ways, for example, as 1196836 + 1062961 = 1094^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2259797 - 2⁴ = 2259781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 55117 = 2259797 / (2 + 2 + 5 + 9 + 7 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2259791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27518 + ... + 27599.

It is an arithmetic number, because the mean of its divisors is an integer number (578739).

2^2259797 is an apocalyptic number.

It is an amenable number.

2259797 is a deficient number, since it is larger than the sum of its proper divisors (55159).

2259797 is an equidigital number, since it uses as much as digits as its factorization.

2259797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55158.

The product of its digits is 79380, while the sum is 41.

The square root of 2259797 is about 1503.2621195254. The cubic root of 2259797 is about 131.2269825094.

The spelling of 2259797 in words is "two million, two hundred fifty-nine thousand, seven hundred ninety-seven".