2261895 has 16 divisors (see below), whose sum is σ = 3657312. Its totient is φ = 1193600.

The previous prime is 2261891. The next prime is 2261911. The reversal of 2261895 is 5981622.

It is not a de Polignac number, because 2261895 - 2² = 2261891 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 769 + ... + 2261.

It is an arithmetic number, because the mean of its divisors is an integer number (228582).

2^2261895 is an apocalyptic number.

2261895 is a deficient number, since it is larger than the sum of its proper divisors (1395417).

2261895 is a wasteful number, since it uses less digits than its factorization.

2261895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602.

The product of its digits is 8640, while the sum is 33.

The square root of 2261895 is about 1503.9597733982. The cubic root of 2261895 is about 131.2675804115.

The spelling of 2261895 in words is "two million, two hundred sixty-one thousand, eight hundred ninety-five".