513052240 has 20 divisors (see below), whose sum is σ = 1192846644. Its totient is φ = 205220864.

The previous prime is 513052219. The next prime is 513052289. The reversal of 513052240 is 42250315.

It can be written as a sum of positive squares in 2 ways, for example, as 238023184 + 275029056 = 15428^2 + 16584^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3206497 + ... + 3206656.

Almost surely, 2^513052240 is an apocalyptic number.

It is an amenable number.

513052240 is an abundant number, since it is smaller than the sum of its proper divisors (679794404).

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

513052240 is a wasteful number, since it uses less digits than its factorization.

513052240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6413166 (or 6413160 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 513052240 is about 22650.6565026270. The cubic root of 513052240 is about 800.5476666577.

The spelling of 513052240 in words is "five hundred thirteen million, fifty-two thousand, two hundred forty".