2205775 has 24 divisors (see below), whose sum is σ = 3218544. Its totient is φ = 1478400.

The previous prime is 2205761. The next prime is 2205779. The reversal of 2205775 is 5775022.

It is a de Polignac number, because none of the positive numbers 2^k-2205775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3267 + ... + 3883.

It is an arithmetic number, because the mean of its divisors is an integer number (134106).

2^2205775 is an apocalyptic number.

2205775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2205775 is a deficient number, since it is larger than the sum of its proper divisors (1012769).

2205775 is a wasteful number, since it uses less digits than its factorization.

2205775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 2205775 is about 1485.1851736400. The cubic root of 2205775 is about 130.1728470052.

It can be divided in two parts, 220 and 5775, that added together give a palindrome (5995).

The spelling of 2205775 in words is "two million, two hundred five thousand, seven hundred seventy-five".