445556 has 24 divisors (see below), whose sum is σ = 846720. Its totient is φ = 204512.

The previous prime is 445541. The next prime is 445567. The reversal of 445556 is 655544.

445556 = T₂₃ + T₂₄ + ... + T₁₃₈.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

445556 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2585 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (35280).

2⁴⁴⁵⁵⁵⁶ is an apocalyptic number.

445556 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a pronic number, being equal to 667×668.

It is an amenable number.

445556 is a deficient number, since it is larger than the sum of its proper divisors (401164).

445556 is a wasteful number, since it uses less digits than its factorization.

445556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 221 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 445556 is about 667.4998127341. The cubic root of 445556 is about 76.3778505458.

It can be divided in two parts, 445 and 556, that added together give a palindrome (1001).

The spelling of 445556 in words is "four hundred forty-five thousand, five hundred fifty-six".