7228559 has 4 divisors (see below), whose sum is σ = 7784616. Its totient is φ = 6672504.

The previous prime is 7228547. The next prime is 7228567. The reversal of 7228559 is 9558227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9558227 = 7 ⋅1365461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7228559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222559) 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, 278009 + ... + 278034.

It is an arithmetic number, because the mean of its divisors is an integer number (1946154).

Almost surely, 2^7228559 is an apocalyptic number.

7228559 is a deficient number, since it is larger than the sum of its proper divisors (556057).

7228559 is a wasteful number, since it uses less digits than its factorization.

7228559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556056.

The product of its digits is 50400, while the sum is 38.

The square root of 7228559 is about 2688.5979617637. The cubic root of 7228559 is about 193.3528494633.

The spelling of 7228559 in words is "seven million, two hundred twenty-eight thousand, five hundred fifty-nine".