515669540 has 24 divisors (see below), whose sum is σ = 1083438720. Its totient is φ = 206166368.

The previous prime is 515669537. The next prime is 515669549. The reversal of 515669540 is 45966515.

It is not an unprimeable number, because it can be changed into a prime (515669549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45791 + ... + 55929.

It is an arithmetic number, because the mean of its divisors is an integer number (45143280).

Almost surely, 2^515669540 is an apocalyptic number.

It is an amenable number.

515669540 is an abundant number, since it is smaller than the sum of its proper divisors (567769180).

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

515669540 is a wasteful number, since it uses less digits than its factorization.

515669540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12691 (or 12689 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 515669540 is about 22708.3583730749. The cubic root of 515669540 is about 801.9066708975.

The spelling of 515669540 in words is "five hundred fifteen million, six hundred sixty-nine thousand, five hundred forty".