520264385 has 8 divisors (see below), whose sum is σ = 637600896. Its totient is φ = 407355760.

The previous prime is 520264369. The next prime is 520264391. The reversal of 520264385 is 583462025.

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

It is not a de Polignac number, because 520264385 - 2⁴ = 520264369 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 1106711 + ... + 1107180.

It is an arithmetic number, because the mean of its divisors is an integer number (79700112).

Almost surely, 2^520264385 is an apocalyptic number.

It is an amenable number.

520264385 is a deficient number, since it is larger than the sum of its proper divisors (117336511).

520264385 is a wasteful number, since it uses less digits than its factorization.

520264385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213943.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 520264385 is about 22809.3047899317. The cubic root of 520264385 is about 804.2814131887.

The spelling of 520264385 in words is "five hundred twenty million, two hundred sixty-four thousand, three hundred eighty-five".