2261897 has 4 divisors (see below), whose sum is σ = 2467536. Its totient is φ = 2056260.

The previous prime is 2261891. The next prime is 2261911. The reversal of 2261897 is 7981622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2261897 - 2¹⁶ = 2196361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261891) 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, 102803 + ... + 102824.

It is an arithmetic number, because the mean of its divisors is an integer number (616884).

2^2261897 is an apocalyptic number.

It is an amenable number.

2261897 is a deficient number, since it is larger than the sum of its proper divisors (205639).

2261897 is a wasteful number, since it uses less digits than its factorization.

2261897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205638.

The product of its digits is 12096, while the sum is 35.

The square root of 2261897 is about 1503.9604383095. The cubic root of 2261897 is about 131.2676191011.

The spelling of 2261897 in words is "two million, two hundred sixty-one thousand, eight hundred ninety-seven".