7224165 has 48 divisors (see below), whose sum is σ = 13798512. Its totient is φ = 3474432.

The previous prime is 7224149. The next prime is 7224181. The reversal of 7224165 is 5614227.

It is an interprime number because it is at equal distance from previous prime (7224149) and next prime (7224181).

It can be written as a sum of positive squares in 8 ways, for example, as 675684 + 6548481 = 822^2 + 2559^2 .

It is not a de Polignac number, because 7224165 - 2⁴ = 7224149 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30889 + ... + 31121.

It is an arithmetic number, because the mean of its divisors is an integer number (287469).

Almost surely, 2^7224165 is an apocalyptic number.

It is an amenable number.

7224165 is a deficient number, since it is larger than the sum of its proper divisors (6574347).

7224165 is a wasteful number, since it uses less digits than its factorization.

7224165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 307 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 7224165 is about 2687.7806830171. The cubic root of 7224165 is about 193.3136639390.

The spelling of 7224165 in words is "seven million, two hundred twenty-four thousand, one hundred sixty-five".