7222775 has 24 divisors (see below), whose sum is σ = 10341600. Its totient is φ = 4901760.

The previous prime is 7222771. The next prime is 7222781. The reversal of 7222775 is 5772227.

It is not a de Polignac number, because 7222775 - 2² = 7222771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25937 + ... + 26213.

It is an arithmetic number, because the mean of its divisors is an integer number (430900).

Almost surely, 2^7222775 is an apocalyptic number.

7222775 is a deficient number, since it is larger than the sum of its proper divisors (3118825).

7222775 is a wasteful number, since it uses less digits than its factorization.

7222775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 438 counting only the distinct ones).

The product of its digits is 13720, while the sum is 32.

The square root of 7222775 is about 2687.5220929324. The cubic root of 7222775 is about 193.3012646638.

It can be divided in two parts, 7222 and 775, that added together give a palindrome (7997).

The spelling of 7222775 in words is "seven million, two hundred twenty-two thousand, seven hundred seventy-five".