2722539 has 4 divisors (see below), whose sum is σ = 3630056. Its totient is φ = 1815024.

The previous prime is 2722507. The next prime is 2722541. The reversal of 2722539 is 9352272.

It is a happy number.

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

It is not a de Polignac number, because 2722539 - 2⁵ = 2722507 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2722439) 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, 453754 + ... + 453759.

It is an arithmetic number, because the mean of its divisors is an integer number (907514).

2^2722539 is an apocalyptic number.

2722539 is a deficient number, since it is larger than the sum of its proper divisors (907517).

2722539 is an equidigital number, since it uses as much as digits as its factorization.

2722539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907516.

The product of its digits is 7560, while the sum is 30.

The square root of 2722539 is about 1650.0118181395. The cubic root of 2722539 is about 139.6340613323.

The spelling of 2722539 in words is "two million, seven hundred twenty-two thousand, five hundred thirty-nine".