7224913 has 4 divisors (see below), whose sum is σ = 7230388. Its totient is φ = 7219440.

The previous prime is 7224911. The next prime is 7224923. The reversal of 7224913 is 3194227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6436369 + 788544 = 2537^2 + 888^2 .

It is a cyclic number.

It is not a de Polignac number, because 7224913 - 2¹ = 7224911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7224911) 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, 595 + ... + 3847.

It is an arithmetic number, because the mean of its divisors is an integer number (1807597).

Almost surely, 2^7224913 is an apocalyptic number.

It is an amenable number.

7224913 is a deficient number, since it is larger than the sum of its proper divisors (5475).

7224913 is a wasteful number, since it uses less digits than its factorization.

7224913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474.

The product of its digits is 3024, while the sum is 28.

The square root of 7224913 is about 2687.9198276734. The cubic root of 7224913 is about 193.3203356964.

The spelling of 7224913 in words is "seven million, two hundred twenty-four thousand, nine hundred thirteen".