520388263 has 8 divisors (see below), whose sum is σ = 531118080. Its totient is φ = 509745720.

The previous prime is 520388257. The next prime is 520388299. The reversal of 520388263 is 362883025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520388263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520388243) 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, 9703 + ... + 33688.

It is an arithmetic number, because the mean of its divisors is an integer number (66389760).

Almost surely, 2^520388263 is an apocalyptic number.

520388263 is a deficient number, since it is larger than the sum of its proper divisors (10729817).

520388263 is a wasteful number, since it uses less digits than its factorization.

520388263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43637.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 520388263 is about 22812.0201428983. The cubic root of 520388263 is about 804.3452428293.

The spelling of 520388263 in words is "five hundred twenty million, three hundred eighty-eight thousand, two hundred sixty-three".