2274721 has 8 divisors (see below), whose sum is σ = 2356200. Its totient is φ = 2194560.

The previous prime is 2274709. The next prime is 2274733. The reversal of 2274721 is 1274722.

It is an interprime number because it is at equal distance from previous prime (2274709) and next prime (2274733).

It can be written as a sum of positive squares in 4 ways, for example, as 314721 + 1960000 = 561^2 + 1400^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2274721 - 2⁵ = 2274689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2274761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4215 + ... + 4723.

It is an arithmetic number, because the mean of its divisors is an integer number (294525).

2^2274721 is an apocalyptic number.

It is an amenable number.

2274721 is a deficient number, since it is larger than the sum of its proper divisors (81479).

2274721 is a wasteful number, since it uses less digits than its factorization.

2274721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its digits is 1568, while the sum is 25.

The square root of 2274721 is about 1508.2178224646. The cubic root of 2274721 is about 131.5152290477.

Subtracting from 2274721 its reverse (1274722), we obtain a palindrome (999999).

The spelling of 2274721 in words is "two million, two hundred seventy-four thousand, seven hundred twenty-one".