505140250 has 16 divisors (see below), whose sum is σ = 945623016. Its totient is φ = 202056000.

The previous prime is 505140211. The next prime is 505140281. The reversal of 505140250 is 52041505.

It can be written as a sum of positive squares in 4 ways, for example, as 23030401 + 482109849 = 4799^2 + 21957^2 .

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, 1010031 + ... + 1010530.

Almost surely, 2^505140250 is an apocalyptic number.

505140250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505140250 is a deficient number, since it is larger than the sum of its proper divisors (440482766).

505140250 is a wasteful number, since it uses less digits than its factorization.

505140250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020578 (or 2020568 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 505140250 is about 22475.3253591578. The cubic root of 505140250 is about 796.4111377011.

Adding to 505140250 its reverse (52041505), we get a palindrome (557181755).

The spelling of 505140250 in words is "five hundred five million, one hundred forty thousand, two hundred fifty".