7281049 has 4 divisors (see below), whose sum is σ = 7709364. Its totient is φ = 6852736.

The previous prime is 7281031. The next prime is 7281077. The reversal of 7281049 is 9401827.

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 5031049 + 2250000 = 2243^2 + 1500^2 .

It is a cyclic number.

It is not a de Polignac number, because 7281049 - 2²¹ = 5183897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7281049.

It is not an unprimeable number, because it can be changed into a prime (7281089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214132 + ... + 214165.

It is an arithmetic number, because the mean of its divisors is an integer number (1927341).

Almost surely, 2^7281049 is an apocalyptic number.

It is an amenable number.

7281049 is a deficient number, since it is larger than the sum of its proper divisors (428315).

7281049 is a wasteful number, since it uses less digits than its factorization.

7281049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428314.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 7281049 is about 2698.3418982775. The cubic root of 7281049 is about 193.8197301562.

The spelling of 7281049 in words is "seven million, two hundred eighty-one thousand, forty-nine".