445555 has 8 divisors (see below), whose sum is σ = 583344. Its totient is φ = 324000.

The previous prime is 445541. The next prime is 445567. The reversal of 445555 is 555544.

445555 = 270² + 271² + ... + 275².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 445555 - 2⁷ = 445427 is a prime.

It is a Duffinian number.

445555 is a modest number, since divided by 555 gives 445 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3996 + ... + 4105.

It is an arithmetic number, because the mean of its divisors is an integer number (72918).

2⁴⁴⁵⁵⁵⁵ is an apocalyptic number.

445555 is a deficient number, since it is larger than the sum of its proper divisors (137789).

445555 is a wasteful number, since it uses less digits than its factorization.

445555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8117.

The product of its digits is 10000, while the sum is 28.

The square root of 445555 is about 667.4990636698. The cubic root of 445555 is about 76.3777934053.

It can be divided in two parts, 4455 and 55, that multiplied together give a square (245025 = 495²).

The spelling of 445555 in words is "four hundred forty-five thousand, five hundred fifty-five".