7225291 has 4 divisors (see below), whose sum is σ = 7232400. Its totient is φ = 7218184.

The previous prime is 7225279. The next prime is 7225303. The reversal of 7225291 is 1925227.

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 is an interprime number because it is at equal distance from previous prime (7225279) and next prime (7225303).

It is a cyclic number.

It is not a de Polignac number, because 7225291 - 2¹¹ = 7223243 is a prime.

It is a Duffinian number.

7225291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7225241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711 + ... + 4168.

It is an arithmetic number, because the mean of its divisors is an integer number (1808100).

Almost surely, 2^7225291 is an apocalyptic number.

7225291 is a deficient number, since it is larger than the sum of its proper divisors (7109).

7225291 is a wasteful number, since it uses less digits than its factorization.

7225291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7108.

The product of its digits is 2520, while the sum is 28.

The square root of 7225291 is about 2687.9901413510. The cubic root of 7225291 is about 193.3237070778.

The spelling of 7225291 in words is "seven million, two hundred twenty-five thousand, two hundred ninety-one".