2722971 has 4 divisors (see below), whose sum is σ = 3630632. Its totient is φ = 1815312.

The previous prime is 2722969. The next prime is 2722987. The reversal of 2722971 is 1792272.

It is a happy number.

2722971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2722971 - 2¹ = 2722969 is a prime.

It is a D-number.

It is a Duffinian number.

2722971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2722931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453826 + ... + 453831.

It is an arithmetic number, because the mean of its divisors is an integer number (907658).

2^2722971 is an apocalyptic number.

2722971 is a deficient number, since it is larger than the sum of its proper divisors (907661).

2722971 is an equidigital number, since it uses as much as digits as its factorization.

2722971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907660.

The product of its digits is 3528, while the sum is 30.

The square root of 2722971 is about 1650.1427211002. The cubic root of 2722971 is about 139.6414464391.

The spelling of 2722971 in words is "two million, seven hundred twenty-two thousand, nine hundred seventy-one".