7221885 has 48 divisors (see below), whose sum is σ = 13329792. Its totient is φ = 3329920.

The previous prime is 7221871. The next prime is 7221911. The reversal of 7221885 is 5881227.

7221885 = T₁₀₁ + T₁₀₂ + ... + T₃₅₃.

7221885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7221885 - 2⁴ = 7221869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 41659 + ... + 41831.

It is an arithmetic number, because the mean of its divisors is an integer number (277704).

Almost surely, 2^7221885 is an apocalyptic number.

It is an amenable number.

7221885 is a deficient number, since it is larger than the sum of its proper divisors (6107907).

7221885 is a wasteful number, since it uses less digits than its factorization.

7221885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 215 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 7221885 is about 2687.3565077972. The cubic root of 7221885 is about 193.2933247242.

The spelling of 7221885 in words is "seven million, two hundred twenty-one thousand, eight hundred eighty-five".