505135240 has 16 divisors (see below), whose sum is σ = 1136554380. Its totient is φ = 202054080.

The previous prime is 505135231. The next prime is 505135247. The reversal of 505135240 is 42531505.

It can be written as a sum of positive squares in 2 ways, for example, as 467164996 + 37970244 = 21614^2 + 6162^2 .

It is a super-2 number, since 2×505135240² = 510323221379715200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505135247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6314151 + ... + 6314230.

Almost surely, 2^505135240 is an apocalyptic number.

It is an amenable number.

505135240 is an abundant number, since it is smaller than the sum of its proper divisors (631419140).

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

505135240 is a wasteful number, since it uses less digits than its factorization.

505135240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12628392 (or 12628388 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 505135240 is about 22475.2139033203. The cubic root of 505135240 is about 796.4085047472.

Adding to 505135240 its reverse (42531505), we get a palindrome (547666745).

The spelling of 505135240 in words is "five hundred five million, one hundred thirty-five thousand, two hundred forty".