505507444 has 24 divisors (see below), whose sum is σ = 1008729288. Its totient is φ = 219586560.

The previous prime is 505507423. The next prime is 505507469. The reversal of 505507444 is 444705505.

It can be written as a sum of positive squares in 4 ways, for example, as 4284900 + 501222544 = 2070^2 + 22388^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285037 + ... + 286804.

It is an arithmetic number, because the mean of its divisors is an integer number (42030387).

Almost surely, 2^505507444 is an apocalyptic number.

It is an amenable number.

505507444 is a deficient number, since it is larger than the sum of its proper divisors (503221844).

505507444 is a wasteful number, since it uses less digits than its factorization.

505507444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571875 (or 571873 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 34.

The square root of 505507444 is about 22483.4927002012. The cubic root of 505507444 is about 796.6040653490.

The spelling of 505507444 in words is "five hundred five million, five hundred seven thousand, four hundred forty-four".