4445550 has 96 divisors (see below), whose sum is σ = 12722400. Its totient is φ = 1140480.

The previous prime is 4445543. The next prime is 4445557. The reversal of 4445550 is 555444.

It is an interprime number because it is at equal distance from previous prime (4445543) and next prime (4445557).

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49906 + ... + 49994.

It is an arithmetic number, because the mean of its divisors is an integer number (132525).

Almost surely, 2^4445550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4445550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6361200).

4445550 is an abundant number, since it is smaller than the sum of its proper divisors (8276850).

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

4445550 is a wasteful number, since it uses less digits than its factorization.

4445550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 4445550 is about 2108.4472959977. The cubic root of 4445550 is about 164.4277698308.

The spelling of 4445550 in words is "four million, four hundred forty-five thousand, five hundred fifty".