2228651 has 4 divisors (see below), whose sum is σ = 2234232. Its totient is φ = 2223072.

The previous prime is 2228591. The next prime is 2228657. The reversal of 2228651 is 1568222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2228651 - 2¹⁰ = 2227627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2228651.

It is not an unprimeable number, because it can be changed into a prime (2228657) 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, 2141 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (558558).

2^2228651 is an apocalyptic number.

2228651 is a deficient number, since it is larger than the sum of its proper divisors (5581).

2228651 is an equidigital number, since it uses as much as digits as its factorization.

2228651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580.

The product of its digits is 1920, while the sum is 26.

The square root of 2228651 is about 1492.8667053692. The cubic root of 2228651 is about 130.6213059554.

The spelling of 2228651 in words is "two million, two hundred twenty-eight thousand, six hundred fifty-one".