4445556 has 12 divisors (see below), whose sum is σ = 10372992. Its totient is φ = 1481848.

The previous prime is 4445543. The next prime is 4445557. The reversal of 4445556 is 6555444.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185220 + ... + 185243.

It is an arithmetic number, because the mean of its divisors is an integer number (864416).

Almost surely, 2^4445556 is an apocalyptic number.

4445556 is the 1334-th centered pentagonal number.

It is an amenable number.

4445556 is an abundant number, since it is smaller than the sum of its proper divisors (5927436).

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

4445556 is a wasteful number, since it uses less digits than its factorization.

4445556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370470 (or 370468 counting only the distinct ones).

The product of its digits is 48000, while the sum is 33.

The square root of 4445556 is about 2108.4487188452. The cubic root of 4445556 is about 164.4278438048.

The spelling of 4445556 in words is "four million, four hundred forty-five thousand, five hundred fifty-six".