7222945 has 8 divisors (see below), whose sum is σ = 9123840. Its totient is φ = 5474160.

The previous prime is 7222939. The next prime is 7222981. The reversal of 7222945 is 5492227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7222945 - 2³ = 7222937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37921 + ... + 38110.

It is an arithmetic number, because the mean of its divisors is an integer number (1140480).

Almost surely, 2^7222945 is an apocalyptic number.

It is an amenable number.

7222945 is a deficient number, since it is larger than the sum of its proper divisors (1900895).

7222945 is a wasteful number, since it uses less digits than its factorization.

7222945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76055.

The product of its digits is 10080, while the sum is 31.

The square root of 7222945 is about 2687.5537203933. The cubic root of 7222945 is about 193.3027812073.

The spelling of 7222945 in words is "seven million, two hundred twenty-two thousand, nine hundred forty-five".