7224945 has 64 divisors (see below), whose sum is σ = 14622720. Its totient is φ = 2965248.

The previous prime is 7224941. The next prime is 7224947. The reversal of 7224945 is 5494227.

It is not a de Polignac number, because 7224945 - 2² = 7224941 is a prime.

7224945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7224941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 91416 + ... + 91494.

It is an arithmetic number, because the mean of its divisors is an integer number (228480).

Almost surely, 2^7224945 is an apocalyptic number.

It is an amenable number.

7224945 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

7224945 is a wasteful number, since it uses less digits than its factorization.

7224945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174.

The product of its digits is 20160, while the sum is 33.

The square root of 7224945 is about 2687.9257802253. The cubic root of 7224945 is about 193.3206211089.

The spelling of 7224945 in words is "seven million, two hundred twenty-four thousand, nine hundred forty-five".