505500444 has 36 divisors (see below), whose sum is σ = 1278491760. Its totient is φ = 168408000.

The previous prime is 505500433. The next prime is 505500451. The reversal of 505500444 is 444005505.

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

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, 105697 + ... + 110375.

It is an arithmetic number, because the mean of its divisors is an integer number (35513660).

Almost surely, 2^505500444 is an apocalyptic number.

It is an amenable number.

505500444 is an abundant number, since it is smaller than the sum of its proper divisors (772991316).

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

505500444 is a wasteful number, since it uses less digits than its factorization.

505500444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690 (or 7685 counting only the distinct ones).

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

The square root of 505500444 is about 22483.3370298984. The cubic root of 505500444 is about 796.6003883479.

Adding to 505500444 its reverse (444005505), we get a palindrome (949505949).

The spelling of 505500444 in words is "five hundred five million, five hundred thousand, four hundred forty-four".