7221160 has 32 divisors (see below), whose sum is σ = 16476840. Its totient is φ = 2847744.

The previous prime is 7221157. The next prime is 7221161. The reversal of 7221160 is 611227.

It can be written as a sum of positive squares in 4 ways, for example, as 6584356 + 636804 = 2566^2 + 798^2 .

It is not an unprimeable number, because it can be changed into a prime (7221161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684 + ... + 4156.

Almost surely, 2^7221160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7221160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8238420).

7221160 is an abundant number, since it is smaller than the sum of its proper divisors (9255680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7221160 is a wasteful number, since it uses less digits than its factorization.

7221160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 7221160 is about 2687.2216134885. The cubic root of 7221160 is about 193.2868563137.

Adding to 7221160 its reverse (611227), we get a palindrome (7832387).

It can be divided in two parts, 7221 and 160, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 7221160 in words is "seven million, two hundred twenty-one thousand, one hundred sixty".