2285561 has 4 divisors (see below), whose sum is σ = 2317824. Its totient is φ = 2253300.

The previous prime is 2285551. The next prime is 2285581. The reversal of 2285561 is 1655822.

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 2285561 - 2¹⁰ = 2284537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2285551) 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, 16025 + ... + 16166.

It is an arithmetic number, because the mean of its divisors is an integer number (579456).

2^2285561 is an apocalyptic number.

It is an amenable number.

2285561 is a deficient number, since it is larger than the sum of its proper divisors (32263).

2285561 is an equidigital number, since it uses as much as digits as its factorization.

2285561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32262.

The product of its digits is 4800, while the sum is 29.

The square root of 2285561 is about 1511.8071967020. The cubic root of 2285561 is about 131.7238064941.

The spelling of 2285561 in words is "two million, two hundred eighty-five thousand, five hundred sixty-one".