9221556 has 24 divisors (see below), whose sum is σ = 22042944. Its totient is φ = 2998720.

The previous prime is 9221519. The next prime is 9221567. The reversal of 9221556 is 6551229.

It is a happy number.

9221556 is digitally balanced in base 2, base 4 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9221556² = 170074190122272, which contains 22 as substring.

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, 8880 + ... + 9863.

It is an arithmetic number, because the mean of its divisors is an integer number (918456).

Almost surely, 2^9221556 is an apocalyptic number.

It is an amenable number.

9221556 is an abundant number, since it is smaller than the sum of its proper divisors (12821388).

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

9221556 is a wasteful number, since it uses less digits than its factorization.

9221556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18791 (or 18789 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 9221556 is about 3036.7014999832. The cubic root of 9221556 is about 209.7014351307.

The spelling of 9221556 in words is "nine million, two hundred twenty-one thousand, five hundred fifty-six".