505445000 has 40 divisors (see below), whose sum is σ = 1184269350. Its totient is φ = 202176000.

The previous prime is 505444997. The next prime is 505445009. The reversal of 505445000 is 544505.

It can be written as a sum of positive squares in 5 ways, for example, as 6280036 + 499164964 = 2506^2 + 22342^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (505445009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 45545 + ... + 55544.

Almost surely, 2^505445000 is an apocalyptic number.

505445000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505445000 is an abundant number, since it is smaller than the sum of its proper divisors (678824350).

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

505445000 is a wasteful number, since it uses less digits than its factorization.

505445000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101115 (or 101096 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 505445000 is about 22482.1039940660. The cubic root of 505445000 is about 796.5712631992.

Adding to 505445000 its reverse (544505), we get a palindrome (505989505).

It can be divided in two parts, 50 and 5445000, that multiplied together give a square (272250000 = 16500²).

The spelling of 505445000 in words is "five hundred five million, four hundred forty-five thousand".