505641140 has 24 divisors (see below), whose sum is σ = 1063088712. Its totient is φ = 202019840.

The previous prime is 505641121. The next prime is 505641173. The reversal of 505641140 is 41146505.

It can be written as a sum of positive squares in 4 ways, for example, as 5134756 + 500506384 = 2266^2 + 22372^2 .

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, 3272 + ... + 31968.

It is an arithmetic number, because the mean of its divisors is an integer number (44295363).

Almost surely, 2^505641140 is an apocalyptic number.

It is an amenable number.

505641140 is an abundant number, since it is smaller than the sum of its proper divisors (557447572).

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

505641140 is a wasteful number, since it uses less digits than its factorization.

505641140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29587 (or 29585 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 505641140 is about 22486.4657071760. The cubic root of 505641140 is about 796.6742874532.

Adding to 505641140 its reverse (41146505), we get a palindrome (546787645).

The spelling of 505641140 in words is "five hundred five million, six hundred forty-one thousand, one hundred forty".