2271225 has 24 divisors (see below), whose sum is σ = 4097952. Its totient is φ = 1100800.

The previous prime is 2271223. The next prime is 2271229. The reversal of 2271225 is 5221722.

It is a happy number.

It is not a de Polignac number, because 2271225 - 2¹ = 2271223 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 2⁸ + 7⁷ + 1 + 2¹³ + 2²⁰ + 5⁸ .

2271225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2271221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (170748).

2^2271225 is an apocalyptic number.

2271225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2271225 is a deficient number, since it is larger than the sum of its proper divisors (1826727).

2271225 is a wasteful number, since it uses less digits than its factorization.

2271225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777 (or 2772 counting only the distinct ones).

The product of its digits is 560, while the sum is 21.

The square root of 2271225 is about 1507.0583930293. The cubic root of 2271225 is about 131.4478196109.

Adding to 2271225 its reverse (5221722), we get a palindrome (7492947).

The spelling of 2271225 in words is "two million, two hundred seventy-one thousand, two hundred twenty-five".