2721049 has 4 divisors (see below), whose sum is σ = 2733264. Its totient is φ = 2708836.

The previous prime is 2721031. The next prime is 2721053. The reversal of 2721049 is 9401272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2721049 - 2¹¹ = 2719001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2721449) 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, 5767 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (683316).

2^2721049 is an apocalyptic number.

It is an amenable number.

2721049 is a deficient number, since it is larger than the sum of its proper divisors (12215).

2721049 is a wasteful number, since it uses less digits than its factorization.

2721049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12214.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2721049 is about 1649.5602444288. The cubic root of 2721049 is about 139.6085835561.

The spelling of 2721049 in words is "two million, seven hundred twenty-one thousand, forty-nine".