4421556 has 36 divisors (see below), whose sum is σ = 11243232. Its totient is φ = 1465104.

The previous prime is 4421539. The next prime is 4421567. The reversal of 4421556 is 6551244.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×4421556² = 39100314922272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9235 + ... + 9701.

It is an arithmetic number, because the mean of its divisors is an integer number (312312).

Almost surely, 2^4421556 is an apocalyptic number.

It is an amenable number.

4421556 is an abundant number, since it is smaller than the sum of its proper divisors (6821676).

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

4421556 is a wasteful number, since it uses less digits than its factorization.

4421556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 735 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 4421556 is about 2102.7496284627. The cubic root of 4421556 is about 164.1314136070.

The spelling of 4421556 in words is "four million, four hundred twenty-one thousand, five hundred fifty-six".