2225811 has 16 divisors (see below), whose sum is σ = 3435264. Its totient is φ = 1255584.

The previous prime is 2225791. The next prime is 2225819. The reversal of 2225811 is 1185222.

It is a happy number.

It is not a de Polignac number, because 2225811 - 2⁶ = 2225747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2225819) 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, 1105 + ... + 2381.

It is an arithmetic number, because the mean of its divisors is an integer number (214704).

2^2225811 is an apocalyptic number.

2225811 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2225811 is a deficient number, since it is larger than the sum of its proper divisors (1209453).

2225811 is a wasteful number, since it uses less digits than its factorization.

2225811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370.

The product of its digits is 320, while the sum is 21.

The square root of 2225811 is about 1491.9152120680. The cubic root of 2225811 is about 130.5657982072.

The spelling of 2225811 in words is "two million, two hundred twenty-five thousand, eight hundred eleven".