520353923 has 4 divisors (see below), whose sum is σ = 520841760. Its totient is φ = 519866088.

The previous prime is 520353917. The next prime is 520353929. The reversal of 520353923 is 329353025.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (520353917) and next prime (520353929).

It is a cyclic number.

It is not a de Polignac number, because 520353923 - 2⁶ = 520353859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520353923.

It is not an unprimeable number, because it can be changed into a prime (520353929) 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, 242315 + ... + 244452.

It is an arithmetic number, because the mean of its divisors is an integer number (130210440).

Almost surely, 2^520353923 is an apocalyptic number.

520353923 is a deficient number, since it is larger than the sum of its proper divisors (487837).

520353923 is a wasteful number, since it uses less digits than its factorization.

520353923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487836.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 520353923 is about 22811.2674571143. The cubic root of 520353923 is about 804.3275497431.

The spelling of 520353923 in words is "five hundred twenty million, three hundred fifty-three thousand, nine hundred twenty-three".