7228477 has 2 divisors, whose sum is σ = 7228478. Its totient is φ = 7228476.

The previous prime is 7228471. The next prime is 7228483. The reversal of 7228477 is 7748227.

It is a balanced prime because it is at equal distance from previous prime (7228471) and next prime (7228483).

It can be written as a sum of positive squares in only one way, i.e., 6937956 + 290521 = 2634^2 + 539^2 .

It is an emirp because it is prime and its reverse (7748227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7228477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7228471) 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 as a sum of consecutive naturals, namely, 3614238 + 3614239.

It is an arithmetic number, because the mean of its divisors is an integer number (3614239).

Almost surely, 2^7228477 is an apocalyptic number.

It is an amenable number.

7228477 is a deficient number, since it is larger than the sum of its proper divisors (1).

7228477 is an equidigital number, since it uses as much as digits as its factorization.

7228477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43904, while the sum is 37.

The square root of 7228477 is about 2688.5827121366. The cubic root of 7228477 is about 193.3521183359.

It can be divided in two parts, 72284 and 77, that added together give a square (72361 = 269²).

The spelling of 7228477 in words is "seven million, two hundred twenty-eight thousand, four hundred seventy-seven".