513055640 has 16 divisors (see below), whose sum is σ = 1154375280. Its totient is φ = 205222240.

The previous prime is 513055633. The next prime is 513055643. The reversal of 513055640 is 46550315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513055643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6413156 + ... + 6413235.

It is an arithmetic number, because the mean of its divisors is an integer number (72148455).

Almost surely, 2^513055640 is an apocalyptic number.

It is an amenable number.

513055640 is an abundant number, since it is smaller than the sum of its proper divisors (641319640).

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

513055640 is a wasteful number, since it uses less digits than its factorization.

513055640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12826402 (or 12826398 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 513055640 is about 22650.7315555149. The cubic root of 513055640 is about 800.5494350650.

The spelling of 513055640 in words is "five hundred thirteen million, fifty-five thousand, six hundred forty".