517263540 has 48 divisors (see below), whose sum is σ = 1449958272. Its totient is φ = 137782656.

The previous prime is 517263493. The next prime is 517263541. The reversal of 517263540 is 45362715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517263541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55497 + ... + 64143.

It is an arithmetic number, because the mean of its divisors is an integer number (30207464).

Almost surely, 2^517263540 is an apocalyptic number.

It is an amenable number.

517263540 is an abundant number, since it is smaller than the sum of its proper divisors (932694732).

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

517263540 is a wasteful number, since it uses less digits than its factorization.

517263540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9656 (or 9654 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 517263540 is about 22743.4285014375. The cubic root of 517263540 is about 802.7320860939.

The spelling of 517263540 in words is "five hundred seventeen million, two hundred sixty-three thousand, five hundred forty".