505205450 has 24 divisors (see below), whose sum is σ = 969997440. Its totient is φ = 195562800.

The previous prime is 505205443. The next prime is 505205453. The reversal of 505205450 is 54502505.

It is not an unprimeable number, because it can be changed into a prime (505205453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161420 + ... + 164519.

It is an arithmetic number, because the mean of its divisors is an integer number (40416560).

Almost surely, 2^505205450 is an apocalyptic number.

505205450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505205450 is a deficient number, since it is larger than the sum of its proper divisors (464791990).

505205450 is a wasteful number, since it uses less digits than its factorization.

505205450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325982 (or 325977 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 505205450 is about 22476.7757919146. The cubic root of 505205450 is about 796.4454013023.

Adding to 505205450 its reverse (54502505), we get a palindrome (559707955).

The spelling of 505205450 in words is "five hundred five million, two hundred five thousand, four hundred fifty".