513253240 has 16 divisors (see below), whose sum is σ = 1154819880. Its totient is φ = 205301280.

The previous prime is 513253189. The next prime is 513253241. The reversal of 513253240 is 42352315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513253241) 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, 6415626 + ... + 6415705.

Almost surely, 2^513253240 is an apocalyptic number.

It is an amenable number.

513253240 is an abundant number, since it is smaller than the sum of its proper divisors (641566640).

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

513253240 is a wasteful number, since it uses less digits than its factorization.

513253240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12831342 (or 12831338 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 513253240 is about 22655.0930256311. The cubic root of 513253240 is about 800.6521973205.

The spelling of 513253240 in words is "five hundred thirteen million, two hundred fifty-three thousand, two hundred forty".