501145240 has 16 divisors (see below), whose sum is σ = 1127576880. Its totient is φ = 200458080.

The previous prime is 501145237. The next prime is 501145241. The reversal of 501145240 is 42541105.

It is a super-2 number, since 2×501145240² = 502293103149315200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501145241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6264276 + ... + 6264355.

It is an arithmetic number, because the mean of its divisors is an integer number (70473555).

Almost surely, 2^501145240 is an apocalyptic number.

It is an amenable number.

501145240 is an abundant number, since it is smaller than the sum of its proper divisors (626431640).

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

501145240 is a wasteful number, since it uses less digits than its factorization.

501145240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12528642 (or 12528638 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 501145240 is about 22386.2734728226. The cubic root of 501145240 is about 794.3060489666.

Adding to 501145240 its reverse (42541105), we get a palindrome (543686345).

The spelling of 501145240 in words is "five hundred one million, one hundred forty-five thousand, two hundred forty".