2722745 has 4 divisors (see below), whose sum is σ = 3267300. Its totient is φ = 2178192.

The previous prime is 2722729. The next prime is 2722751. The reversal of 2722745 is 5472272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1420864 + 1301881 = 1192^2 + 1141^2 .

It is a cyclic number.

It is not a de Polignac number, because 2722745 - 2⁴ = 2722729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272270 + ... + 272279.

It is an arithmetic number, because the mean of its divisors is an integer number (816825).

2^2722745 is an apocalyptic number.

It is an amenable number.

2722745 is a deficient number, since it is larger than the sum of its proper divisors (544555).

2722745 is an equidigital number, since it uses as much as digits as its factorization.

2722745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544554.

The product of its digits is 7840, while the sum is 29.

The square root of 2722745 is about 1650.0742407540. The cubic root of 2722745 is about 139.6375830316.

It can be divided in two parts, 27227 and 45, that added together give a palindrome (27272).

The spelling of 2722745 in words is "two million, seven hundred twenty-two thousand, seven hundred forty-five".