520353873 has 72 divisors (see below), whose sum is σ = 863291520. Its totient is φ = 301392000.

The previous prime is 520353871. The next prime is 520353887. The reversal of 520353873 is 378353025.

520353873 is a `hidden beast` number, since 52 + 0 + 3 + 538 + 73 = 666.

It is not a de Polignac number, because 520353873 - 2¹ = 520353871 is a prime.

It is a super-2 number, since 2×520353873² = 541536306292200258, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520353871) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2072998 + ... + 2073248.

It is an arithmetic number, because the mean of its divisors is an integer number (11990160).

Almost surely, 2^520353873 is an apocalyptic number.

It is an amenable number.

520353873 is a deficient number, since it is larger than the sum of its proper divisors (342937647).

520353873 is a wasteful number, since it uses less digits than its factorization.

520353873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 520353873 is about 22811.2663611646. The cubic root of 520353873 is about 804.3275239809.

The spelling of 520353873 in words is "five hundred twenty million, three hundred fifty-three thousand, eight hundred seventy-three".