520198523 has 8 divisors (see below), whose sum is σ = 563346000. Its totient is φ = 477498528.

The previous prime is 520198501. The next prime is 520198531. The reversal of 520198523 is 325891025.

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

It is not a de Polignac number, because 520198523 - 2¹⁰ = 520197499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520198123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109448 + ... + 114101.

It is an arithmetic number, because the mean of its divisors is an integer number (70418250).

Almost surely, 2^520198523 is an apocalyptic number.

520198523 is a deficient number, since it is larger than the sum of its proper divisors (43147477).

520198523 is a wasteful number, since it uses less digits than its factorization.

520198523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223741.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 520198523 is about 22807.8609913337. The cubic root of 520198523 is about 804.2474728695.

The spelling of 520198523 in words is "five hundred twenty million, one hundred ninety-eight thousand, five hundred twenty-three".