7221055 has 8 divisors (see below), whose sum is σ = 8787744. Its totient is φ = 5695200.

The previous prime is 7221041. The next prime is 7221077. The reversal of 7221055 is 5501227.

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

It is not a de Polignac number, because 7221055 - 2¹¹ = 7219007 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 9816 + ... + 10525.

It is an arithmetic number, because the mean of its divisors is an integer number (1098468).

Almost surely, 2^7221055 is an apocalyptic number.

7221055 is a deficient number, since it is larger than the sum of its proper divisors (1566689).

7221055 is a wasteful number, since it uses less digits than its factorization.

7221055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20417.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 7221055 is about 2687.2020765101. The cubic root of 7221055 is about 193.2859194735.

The spelling of 7221055 in words is "seven million, two hundred twenty-one thousand, fifty-five".